chris - sᴉɹɥɔ
@yegwxnerdery.bsky.social
Weather nerdery for Edmonton Alberta, with side discussions of nearby rural stations, and other big Canadian cities.
So November 25th was our first -10°C of the winter, and November 28th was our first -15°C. The last one that we had was back on March 14th. #yegwx #yeg
In November we average around 4 -15°C Lows, although sometimes (2023, 2016, 2009, 2008...) we don't get any.
public.tableau.com/shared/HZFHT...
In November we average around 4 -15°C Lows, although sometimes (2023, 2016, 2009, 2008...) we don't get any.
public.tableau.com/shared/HZFHT...
November 29, 2025 at 4:18 PM
So November 25th was our first -10°C of the winter, and November 28th was our first -15°C. The last one that we had was back on March 14th. #yegwx #yeg
In November we average around 4 -15°C Lows, although sometimes (2023, 2016, 2009, 2008...) we don't get any.
public.tableau.com/shared/HZFHT...
In November we average around 4 -15°C Lows, although sometimes (2023, 2016, 2009, 2008...) we don't get any.
public.tableau.com/shared/HZFHT...
It's kind of funny because in 1998 Blatchford only got 5.2mm (which is 5.2cm of snow), but the airport got 10.8cm (not sure why the number isn't showing up here.
public.tableau.com/shared/ZWC55...
public.tableau.com/shared/ZWC55...
November 28, 2025 at 3:25 AM
It's kind of funny because in 1998 Blatchford only got 5.2mm (which is 5.2cm of snow), but the airport got 10.8cm (not sure why the number isn't showing up here.
public.tableau.com/shared/ZWC55...
public.tableau.com/shared/ZWC55...
So it looks like November 27th will be the start of Edmonton's "lasting" snow for 2025-2026. #yegwx #yeg
That's pretty late.
Recently 2023 made it to December 4th.
And going a bit further back 2008, 2007, 2005, 2004, 2002 &1997 all held out a little bit longer.
public.tableau.com/shared/NTHQ5...
That's pretty late.
Recently 2023 made it to December 4th.
And going a bit further back 2008, 2007, 2005, 2004, 2002 &1997 all held out a little bit longer.
public.tableau.com/shared/NTHQ5...
November 28, 2025 at 2:47 AM
So it looks like November 27th will be the start of Edmonton's "lasting" snow for 2025-2026. #yegwx #yeg
That's pretty late.
Recently 2023 made it to December 4th.
And going a bit further back 2008, 2007, 2005, 2004, 2002 &1997 all held out a little bit longer.
public.tableau.com/shared/NTHQ5...
That's pretty late.
Recently 2023 made it to December 4th.
And going a bit further back 2008, 2007, 2005, 2004, 2002 &1997 all held out a little bit longer.
public.tableau.com/shared/NTHQ5...
...from April 1st to November 24th we went 239 days in-a-row above -10°C.
That's pretty typical, although that number has crept up from ~200 days a century ago.
The big standout is 2016 which went 278 days, from March 1st to December 3rd.
That's pretty typical, although that number has crept up from ~200 days a century ago.
The big standout is 2016 which went 278 days, from March 1st to December 3rd.
November 26, 2025 at 2:04 PM
...from April 1st to November 24th we went 239 days in-a-row above -10°C.
That's pretty typical, although that number has crept up from ~200 days a century ago.
The big standout is 2016 which went 278 days, from March 1st to December 3rd.
That's pretty typical, although that number has crept up from ~200 days a century ago.
The big standout is 2016 which went 278 days, from March 1st to December 3rd.
...by the end of November we average around 12 Lows of -10°C.
Recent high years like 2017 & 2012 got to 18, while there are also low years like 2023, 2016 & 2009 at or near 0.
public.tableau.com/shared/C2PQJ...
Recent high years like 2017 & 2012 got to 18, while there are also low years like 2023, 2016 & 2009 at or near 0.
public.tableau.com/shared/C2PQJ...
November 26, 2025 at 2:03 PM
...by the end of November we average around 12 Lows of -10°C.
Recent high years like 2017 & 2012 got to 18, while there are also low years like 2023, 2016 & 2009 at or near 0.
public.tableau.com/shared/C2PQJ...
Recent high years like 2017 & 2012 got to 18, while there are also low years like 2023, 2016 & 2009 at or near 0.
public.tableau.com/shared/C2PQJ...
So November 25th was Edmonton's first official -10°C of the winter. #yegwx #yeg
It's the first time that we've been down there since back on March 30th.
That's pretty late for a first -10°C, although 2023 got to November 30th, and 2016 & 2009 made it to December.
public.tableau.com/shared/C6626...
It's the first time that we've been down there since back on March 30th.
That's pretty late for a first -10°C, although 2023 got to November 30th, and 2016 & 2009 made it to December.
public.tableau.com/shared/C6626...
November 26, 2025 at 2:03 PM
So November 25th was Edmonton's first official -10°C of the winter. #yegwx #yeg
It's the first time that we've been down there since back on March 30th.
That's pretty late for a first -10°C, although 2023 got to November 30th, and 2016 & 2009 made it to December.
public.tableau.com/shared/C6626...
It's the first time that we've been down there since back on March 30th.
That's pretty late for a first -10°C, although 2023 got to November 30th, and 2016 & 2009 made it to December.
public.tableau.com/shared/C6626...
...does a late start mean a low-snow winter?
These are the late-snow winters since 2000 (Blatchford doesn't record anymore).
2023-2024 & 2015-2016 both peaked at 17cm.
But 2019-2020 & 2018-2019 got to 35cm.
We really just need one good snowfall to get things going.
public.tableau.com/shared/NKJBJ...
These are the late-snow winters since 2000 (Blatchford doesn't record anymore).
2023-2024 & 2015-2016 both peaked at 17cm.
But 2019-2020 & 2018-2019 got to 35cm.
We really just need one good snowfall to get things going.
public.tableau.com/shared/NKJBJ...
November 22, 2025 at 7:56 PM
...does a late start mean a low-snow winter?
These are the late-snow winters since 2000 (Blatchford doesn't record anymore).
2023-2024 & 2015-2016 both peaked at 17cm.
But 2019-2020 & 2018-2019 got to 35cm.
We really just need one good snowfall to get things going.
public.tableau.com/shared/NKJBJ...
These are the late-snow winters since 2000 (Blatchford doesn't record anymore).
2023-2024 & 2015-2016 both peaked at 17cm.
But 2019-2020 & 2018-2019 got to 35cm.
We really just need one good snowfall to get things going.
public.tableau.com/shared/NKJBJ...
...this is our snowdepth history back to the 60s.
The 2nd charts shows the years which were snowfree on November 22nd.
Blatchford & the airport (with the longest histories) had around 20 years which were snowfree at this point.
So it's not completely unheard of.
public.tableau.com/shared/BGDFJ...
The 2nd charts shows the years which were snowfree on November 22nd.
Blatchford & the airport (with the longest histories) had around 20 years which were snowfree at this point.
So it's not completely unheard of.
public.tableau.com/shared/BGDFJ...
November 22, 2025 at 7:52 PM
...this is our snowdepth history back to the 60s.
The 2nd charts shows the years which were snowfree on November 22nd.
Blatchford & the airport (with the longest histories) had around 20 years which were snowfree at this point.
So it's not completely unheard of.
public.tableau.com/shared/BGDFJ...
The 2nd charts shows the years which were snowfree on November 22nd.
Blatchford & the airport (with the longest histories) had around 20 years which were snowfree at this point.
So it's not completely unheard of.
public.tableau.com/shared/BGDFJ...
Last winter, November 22nd was when we got our first big jump in snowdepth, which then stayed with us through March.
2023 waited until December 4th, and after that it was pretty low-snow until a big March storm.
And 2015 made it to November 23rd.
#yegwx #yeg
public.tableau.com/shared/76ZBW...
2023 waited until December 4th, and after that it was pretty low-snow until a big March storm.
And 2015 made it to November 23rd.
#yegwx #yeg
public.tableau.com/shared/76ZBW...
November 22, 2025 at 7:45 PM
Last winter, November 22nd was when we got our first big jump in snowdepth, which then stayed with us through March.
2023 waited until December 4th, and after that it was pretty low-snow until a big March storm.
And 2015 made it to November 23rd.
#yegwx #yeg
public.tableau.com/shared/76ZBW...
2023 waited until December 4th, and after that it was pretty low-snow until a big March storm.
And 2015 made it to November 23rd.
#yegwx #yeg
public.tableau.com/shared/76ZBW...
...And finally, it always feels surprising when it happens, but winter rain is not completely rare in Edmonton.
In December-February we average around 3 rainy days.
2024-2025 had 6 of them, and 2014-2015 had 11, while a lot of others only had 1 or 2.
public.tableau.com/shared/8PJMB...
In December-February we average around 3 rainy days.
2024-2025 had 6 of them, and 2014-2015 had 11, while a lot of others only had 1 or 2.
public.tableau.com/shared/8PJMB...
November 20, 2025 at 2:57 PM
...And finally, it always feels surprising when it happens, but winter rain is not completely rare in Edmonton.
In December-February we average around 3 rainy days.
2024-2025 had 6 of them, and 2014-2015 had 11, while a lot of others only had 1 or 2.
public.tableau.com/shared/8PJMB...
In December-February we average around 3 rainy days.
2024-2025 had 6 of them, and 2014-2015 had 11, while a lot of others only had 1 or 2.
public.tableau.com/shared/8PJMB...
...this is just a fun chart showing the full recorded history of snowdepths for a few stations.
The darkest years are the ones with the highest peaks, and Charlottetown has a lot of them.
public.tableau.com/shared/9M82J...
The darkest years are the ones with the highest peaks, and Charlottetown has a lot of them.
public.tableau.com/shared/9M82J...
November 20, 2025 at 2:57 PM
...this is just a fun chart showing the full recorded history of snowdepths for a few stations.
The darkest years are the ones with the highest peaks, and Charlottetown has a lot of them.
public.tableau.com/shared/9M82J...
The darkest years are the ones with the highest peaks, and Charlottetown has a lot of them.
public.tableau.com/shared/9M82J...
...in the fall Edmonton's snow gets started earlier than other cities.
But for the big spring melt we're not that different.
We can be snowfree by mid to late March, or we can drag into April. And that's true for a lot of places.
public.tableau.com/shared/7P59Y...
But for the big spring melt we're not that different.
We can be snowfree by mid to late March, or we can drag into April. And that's true for a lot of places.
public.tableau.com/shared/7P59Y...
November 20, 2025 at 2:57 PM
...in the fall Edmonton's snow gets started earlier than other cities.
But for the big spring melt we're not that different.
We can be snowfree by mid to late March, or we can drag into April. And that's true for a lot of places.
public.tableau.com/shared/7P59Y...
But for the big spring melt we're not that different.
We can be snowfree by mid to late March, or we can drag into April. And that's true for a lot of places.
public.tableau.com/shared/7P59Y...
...the east coast also gets started a month later than us, and gets melts throughout the winter.
A lot of these years peak around 50cm.
But St. John's got to 125cm in 2019-2020, and in 2014-2015 Moncton & Charlottetown both got above 150cm.
public.tableau.com/shared/GQ5RG...
A lot of these years peak around 50cm.
But St. John's got to 125cm in 2019-2020, and in 2014-2015 Moncton & Charlottetown both got above 150cm.
public.tableau.com/shared/GQ5RG...
November 20, 2025 at 2:57 PM
...the east coast also gets started a month later than us, and gets melts throughout the winter.
A lot of these years peak around 50cm.
But St. John's got to 125cm in 2019-2020, and in 2014-2015 Moncton & Charlottetown both got above 150cm.
public.tableau.com/shared/GQ5RG...
A lot of these years peak around 50cm.
But St. John's got to 125cm in 2019-2020, and in 2014-2015 Moncton & Charlottetown both got above 150cm.
public.tableau.com/shared/GQ5RG...
...Snowdepth in central Canada usually starts closer to the beginning of December.
But where Edmonton usually peaks around 35cm, Ottawa & Quebec City will often get to 50cm, and sometimes up to 80cm or 90cm.
public.tableau.com/shared/SWPFR...
But where Edmonton usually peaks around 35cm, Ottawa & Quebec City will often get to 50cm, and sometimes up to 80cm or 90cm.
public.tableau.com/shared/SWPFR...
November 20, 2025 at 2:57 PM
...Snowdepth in central Canada usually starts closer to the beginning of December.
But where Edmonton usually peaks around 35cm, Ottawa & Quebec City will often get to 50cm, and sometimes up to 80cm or 90cm.
public.tableau.com/shared/SWPFR...
But where Edmonton usually peaks around 35cm, Ottawa & Quebec City will often get to 50cm, and sometimes up to 80cm or 90cm.
public.tableau.com/shared/SWPFR...
...for comparison, Calgary is very different from us, with their frequent chinooks keeping the snowdepth low or zero for most of the winter.
Saskatoon, Regina & Winnipeg all tend to keep their snow, like Edmonton. But they also often start a few weeks after us.
public.tableau.com/shared/39FD2...
Saskatoon, Regina & Winnipeg all tend to keep their snow, like Edmonton. But they also often start a few weeks after us.
public.tableau.com/shared/39FD2...
November 20, 2025 at 2:57 PM
...for comparison, Calgary is very different from us, with their frequent chinooks keeping the snowdepth low or zero for most of the winter.
Saskatoon, Regina & Winnipeg all tend to keep their snow, like Edmonton. But they also often start a few weeks after us.
public.tableau.com/shared/39FD2...
Saskatoon, Regina & Winnipeg all tend to keep their snow, like Edmonton. But they also often start a few weeks after us.
public.tableau.com/shared/39FD2...
...so we will usually have snow on the ground from mid-November to late-March, +/- two weeks on either end.
On average that's around 130 days in-a-row.
And that hasn't changed much since the 60s, and it wasn't too different between the city and the airport.
public.tableau.com/shared/YJTSH...
On average that's around 130 days in-a-row.
And that hasn't changed much since the 60s, and it wasn't too different between the city and the airport.
public.tableau.com/shared/YJTSH...
November 20, 2025 at 2:57 PM
...so we will usually have snow on the ground from mid-November to late-March, +/- two weeks on either end.
On average that's around 130 days in-a-row.
And that hasn't changed much since the 60s, and it wasn't too different between the city and the airport.
public.tableau.com/shared/YJTSH...
On average that's around 130 days in-a-row.
And that hasn't changed much since the 60s, and it wasn't too different between the city and the airport.
public.tableau.com/shared/YJTSH...
...for the big spring melt we're often down to 0cm of snowdepth by the end of March, although sometimes a late snowfall will bump it up again temporarily.
Some recent late years were 2021 on April 21st, 2018 on April 20th, 2013 on April 25, and 2011 on April 21st.
public.tableau.com/shared/44K2G...
Some recent late years were 2021 on April 21st, 2018 on April 20th, 2013 on April 25, and 2011 on April 21st.
public.tableau.com/shared/44K2G...
November 20, 2025 at 2:57 PM
...for the big spring melt we're often down to 0cm of snowdepth by the end of March, although sometimes a late snowfall will bump it up again temporarily.
Some recent late years were 2021 on April 21st, 2018 on April 20th, 2013 on April 25, and 2011 on April 21st.
public.tableau.com/shared/44K2G...
Some recent late years were 2021 on April 21st, 2018 on April 20th, 2013 on April 25, and 2011 on April 21st.
public.tableau.com/shared/44K2G...
...so far the winter of 2025-2026 is off to a pretty slow start for lasting snow.
2024 waited until November 22nd, and 2023 was December 3rd.
But 2021, 2016, 2015, 2011 & 2010 also all waited until mid-November or later.
public.tableau.com/shared/PYHD7...
2024 waited until November 22nd, and 2023 was December 3rd.
But 2021, 2016, 2015, 2011 & 2010 also all waited until mid-November or later.
public.tableau.com/shared/PYHD7...
November 20, 2025 at 2:57 PM
...so far the winter of 2025-2026 is off to a pretty slow start for lasting snow.
2024 waited until November 22nd, and 2023 was December 3rd.
But 2021, 2016, 2015, 2011 & 2010 also all waited until mid-November or later.
public.tableau.com/shared/PYHD7...
2024 waited until November 22nd, and 2023 was December 3rd.
But 2021, 2016, 2015, 2011 & 2010 also all waited until mid-November or later.
public.tableau.com/shared/PYHD7...
...the outlying stations aren't a perfect proxy for the city, but they're not bad.
Back when Blatchford did measure snowdepth it's numbers were maybe a little bit lower than the airport's, but it's still pretty close.
public.tableau.com/shared/32B28...
Back when Blatchford did measure snowdepth it's numbers were maybe a little bit lower than the airport's, but it's still pretty close.
public.tableau.com/shared/32B28...
November 20, 2025 at 2:57 PM
...the outlying stations aren't a perfect proxy for the city, but they're not bad.
Back when Blatchford did measure snowdepth it's numbers were maybe a little bit lower than the airport's, but it's still pretty close.
public.tableau.com/shared/32B28...
Back when Blatchford did measure snowdepth it's numbers were maybe a little bit lower than the airport's, but it's still pretty close.
public.tableau.com/shared/32B28...
...every winter is a little different though.
When we do get early snow in Sep/Oct, it usually melts off.
But after November 1st any snow that we get usually hangs around until spring.
public.tableau.com/shared/76FSM...
When we do get early snow in Sep/Oct, it usually melts off.
But after November 1st any snow that we get usually hangs around until spring.
public.tableau.com/shared/76FSM...
November 20, 2025 at 2:57 PM
...every winter is a little different though.
When we do get early snow in Sep/Oct, it usually melts off.
But after November 1st any snow that we get usually hangs around until spring.
public.tableau.com/shared/76FSM...
When we do get early snow in Sep/Oct, it usually melts off.
But after November 1st any snow that we get usually hangs around until spring.
public.tableau.com/shared/76FSM...
...this shows the average and the range of our winter snowdepth.
It starts around November 1st, and levels off at the end of February around 24cm.
The big spring melt starts a week into March, and we (or at least the airport) are down to 0cm sometime in April.
public.tableau.com/views/Edmont...
It starts around November 1st, and levels off at the end of February around 24cm.
The big spring melt starts a week into March, and we (or at least the airport) are down to 0cm sometime in April.
public.tableau.com/views/Edmont...
November 20, 2025 at 2:57 PM
...this shows the average and the range of our winter snowdepth.
It starts around November 1st, and levels off at the end of February around 24cm.
The big spring melt starts a week into March, and we (or at least the airport) are down to 0cm sometime in April.
public.tableau.com/views/Edmont...
It starts around November 1st, and levels off at the end of February around 24cm.
The big spring melt starts a week into March, and we (or at least the airport) are down to 0cm sometime in April.
public.tableau.com/views/Edmont...
...this is the 50cm+ 2-day storms for these cities.
Charelottown's biggest on record was 153cm in 2004, and St. John's was close with 152cm.
Ottawa & Halifax are both around 75cm, and Montréal's was 58cm.
public.tableau.com/shared/4Q6RT...
Charelottown's biggest on record was 153cm in 2004, and St. John's was close with 152cm.
Ottawa & Halifax are both around 75cm, and Montréal's was 58cm.
public.tableau.com/shared/4Q6RT...
November 20, 2025 at 2:49 PM
...this is the 50cm+ 2-day storms for these cities.
Charelottown's biggest on record was 153cm in 2004, and St. John's was close with 152cm.
Ottawa & Halifax are both around 75cm, and Montréal's was 58cm.
public.tableau.com/shared/4Q6RT...
Charelottown's biggest on record was 153cm in 2004, and St. John's was close with 152cm.
Ottawa & Halifax are both around 75cm, and Montréal's was 58cm.
public.tableau.com/shared/4Q6RT...
...In 140+ years Edmonton has only had a handful of 40cm+ storms. Calgary has had a few more than that.
Ottawa & Montréal got a lot before 1900, but now they're pretty rare.
But Halifax still gets 1 in most winters, and Charlottetown gets a few every winter.
public.tableau.com/shared/KBPBQ...
Ottawa & Montréal got a lot before 1900, but now they're pretty rare.
But Halifax still gets 1 in most winters, and Charlottetown gets a few every winter.
public.tableau.com/shared/KBPBQ...
November 20, 2025 at 2:49 PM
...In 140+ years Edmonton has only had a handful of 40cm+ storms. Calgary has had a few more than that.
Ottawa & Montréal got a lot before 1900, but now they're pretty rare.
But Halifax still gets 1 in most winters, and Charlottetown gets a few every winter.
public.tableau.com/shared/KBPBQ...
Ottawa & Montréal got a lot before 1900, but now they're pretty rare.
But Halifax still gets 1 in most winters, and Charlottetown gets a few every winter.
public.tableau.com/shared/KBPBQ...
...20cm 2-day storms only happen every few years, with the most recent March 27-28, 2025.
For 10cm storms we'll get 1 or 2 per winter.
And for 5cm storms it's 4~8.
public.tableau.com/shared/Y68DY...
For 10cm storms we'll get 1 or 2 per winter.
And for 5cm storms it's 4~8.
public.tableau.com/shared/Y68DY...
November 20, 2025 at 2:49 PM
...20cm 2-day storms only happen every few years, with the most recent March 27-28, 2025.
For 10cm storms we'll get 1 or 2 per winter.
And for 5cm storms it's 4~8.
public.tableau.com/shared/Y68DY...
For 10cm storms we'll get 1 or 2 per winter.
And for 5cm storms it's 4~8.
public.tableau.com/shared/Y68DY...
...these bubbles are all of the 30cm+ storms (counting 2 consecutive days, to include snow that continues overnight).
There have only been 14 of them since 1880 at the two stations.
4 of those got to 40cm, with the largest on April 19-20 1955 with 46cm.
public.tableau.com/shared/D452Q...
There have only been 14 of them since 1880 at the two stations.
4 of those got to 40cm, with the largest on April 19-20 1955 with 46cm.
public.tableau.com/shared/D452Q...
November 20, 2025 at 2:49 PM
...these bubbles are all of the 30cm+ storms (counting 2 consecutive days, to include snow that continues overnight).
There have only been 14 of them since 1880 at the two stations.
4 of those got to 40cm, with the largest on April 19-20 1955 with 46cm.
public.tableau.com/shared/D452Q...
There have only been 14 of them since 1880 at the two stations.
4 of those got to 40cm, with the largest on April 19-20 1955 with 46cm.
public.tableau.com/shared/D452Q...