BoulderCAST Weather 🏔️⛈️
@bouldercast.com
The official BlueSky account of BoulderCAST, a team of local meteorologists that forecast Boulder and Denver weather as well as nearby mountain conditions.
⚡️POWER SHUTDOWN UPDATE: Xcel is projecting to cut power Wed Dec. 17, at ~10AM impacting ~50,000 customers in Boulder, Clear Creek, Jefferson, Larimer & Weld counties.
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
December 17, 2025 at 12:36 AM
⚡️POWER SHUTDOWN UPDATE: Xcel is projecting to cut power Wed Dec. 17, at ~10AM impacting ~50,000 customers in Boulder, Clear Creek, Jefferson, Larimer & Weld counties.
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
A final decision will be made Wed A.M.
Latest shutdown map here: co.my.xcelenergy.com/s/outage-saf... #COwx #colorado
Comparison of the wind forecast from the last time Xcel cut power in Boulder (April 2024) with the wind event on Wednesday Dec 17th where power will likely also be cut #COwx
December 16, 2025 at 10:41 PM
Comparison of the wind forecast from the last time Xcel cut power in Boulder (April 2024) with the wind event on Wednesday Dec 17th where power will likely also be cut #COwx
📩 Join thousands of other Front Range weather enthusiasts and subscribe to our FREE email list. You'll receive instant email notifications of our storm updates, weekly outlooks, recaps, seasonal updates & more (~1-2 emails per week)
➡️ bouldercast.com/subscribe/ #COwx #colorado
➡️ bouldercast.com/subscribe/ #COwx #colorado
December 16, 2025 at 7:41 PM
📩 Join thousands of other Front Range weather enthusiasts and subscribe to our FREE email list. You'll receive instant email notifications of our storm updates, weekly outlooks, recaps, seasonal updates & more (~1-2 emails per week)
➡️ bouldercast.com/subscribe/ #COwx #colorado
➡️ bouldercast.com/subscribe/ #COwx #colorado
The TL;DR from today's rather lengthy forecast discussion for what will be a high impact (though short lived) downslope wind event and fire risk #COWx #Colorado #RedFlagWarning #HighWindWarning #Denver #boulder #cofire
December 16, 2025 at 6:57 PM
The TL;DR from today's rather lengthy forecast discussion for what will be a high impact (though short lived) downslope wind event and fire risk #COWx #Colorado #RedFlagWarning #HighWindWarning #Denver #boulder #cofire
Those located inside the dotted lines could be impacted by Xcel's Public Safety Power Shutdown on Wednesday December 17th due to high wind risk.
This includes more than 500,000 Colorado homes which could be without power for at least 12 hours, likely longer. #COWx #Colorado
This includes more than 500,000 Colorado homes which could be without power for at least 12 hours, likely longer. #COWx #Colorado
December 15, 2025 at 8:33 PM
❗️High Wind Watch posted preemptively for Wednesday in the Mountains, Foothills and western suburbs, including Boulder (but not Denver). Gusts up to 90 MPH possible. Beginning Wednesday A.M. up high, spreading east/downhill quickly thereafter. Fire danger will be high until the evening front. #COWX
December 15, 2025 at 8:27 PM
❗️High Wind Watch posted preemptively for Wednesday in the Mountains, Foothills and western suburbs, including Boulder (but not Denver). Gusts up to 90 MPH possible. Beginning Wednesday A.M. up high, spreading east/downhill quickly thereafter. Fire danger will be high until the evening front. #COWX
This Week in Colorado Weather: A very warm and dry lead up to Christmas with intermittent high fire danger 🥵🔥🎄
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
December 15, 2025 at 3:16 PM
This Week in Colorado Weather: A very warm and dry lead up to Christmas with intermittent high fire danger 🥵🔥🎄
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
With 60°+ temps almost every day leading into Christmas and no real precipitation chances, a brown holiday is expected for the Boulder–Denver area: bouldercast.com/this-week-in... #COwx
The December that has felt like October continues with bone dry and unseasonable warmth persisting into next week (or longer). The Front Range is heading towards a brown Christmas
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
December 12, 2025 at 3:52 PM
The December that has felt like October continues with bone dry and unseasonable warmth persisting into next week (or longer). The Front Range is heading towards a brown Christmas
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
This & more in our latest *Premium* long-range discussion: bouldercast.com/this-weekend... #COwx #Colorado #Forecast
December 12, 2025 at 3:29 PM
The unrelenting west downslope winds have kept temperatures at our station above 60° for the last ~24 hours, peaking at 66°F this A.M.
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
December 12, 2025 at 12:30 AM
The unrelenting west downslope winds have kept temperatures at our station above 60° for the last ~24 hours, peaking at 66°F this A.M.
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
Boulder (& many Front Range cities) are likely to obliterate their record warmest minimum temps for Dec 11 (record here WAS 46° from 1937) #COWx
🔥 RED FLAG WARNING UNTIL SUNSET THURSDAY ⚠️
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
December 11, 2025 at 6:38 PM
🔥 RED FLAG WARNING UNTIL SUNSET THURSDAY ⚠️
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
Boulder and Denver included.
At 11:30AM, Boulder has a temperature of 63°F, west winds gusting up to 35 MPH, humidity 17%, skies mostly (wave) cloudy.
Winds are gusting over 60-80+ MPH at 8000+ feet! #COwx #RedFlagWarning
BoulderCAST Daily – Wed 12/10/25 | A recap of the Foothills windstorm and a look at what’s next (spoiler: more wind): bouldercast.com/bouldercast-... #COwx #colorado #HighWindWarning
December 10, 2025 at 2:45 PM
BoulderCAST Daily – Wed 12/10/25 | A recap of the Foothills windstorm and a look at what’s next (spoiler: more wind): bouldercast.com/bouldercast-... #COwx #colorado #HighWindWarning
Last week's snowstorm dumped 9.1" in Boulder, all within the single calendar day for December 3rd.
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
December 9, 2025 at 10:20 PM
Last week's snowstorm dumped 9.1" in Boulder, all within the single calendar day for December 3rd.
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
This was the 18th snowiest December day, and second snowiest December 3rd, in Boulder's recorded history. #COwx #Boulderwx
December 9, 2025 at 8:58 PM
Update Tuesday 11AM: Modeled "finger-like" incursions verifying well this AM. Strong gusts of 30-50 MPH in these narrow corridors spreading east away from the terrain. Outside of these, gusts generally <20 MPH & just a warm, breezy day. Foothills currently enduring widespread 45-85 MPH gusts. #COWx
December 9, 2025 at 5:48 PM
Update Tuesday 11AM: Modeled "finger-like" incursions verifying well this AM. Strong gusts of 30-50 MPH in these narrow corridors spreading east away from the terrain. Outside of these, gusts generally <20 MPH & just a warm, breezy day. Foothills currently enduring widespread 45-85 MPH gusts. #COWx
Nothing but warm, dry breezy weather for the next 1 to 2 weeks.
We'll still take requests but who knows where they will end up.
We'll still take requests but who knows where they will end up.
December 9, 2025 at 3:25 PM
Nothing but warm, dry breezy weather for the next 1 to 2 weeks.
We'll still take requests but who knows where they will end up.
We'll still take requests but who knows where they will end up.
December 9, 2025 at 3:15 PM
🏔️💨 A powerful mountain wave setup is already driving Foothill gusts past 90 MPH, and it only gets worse through the day. Lesser winds but still very blustery for the lower elevations.
This & more in today's *Premium* Storm Update: bouldercast.com/storm-update... #COwx #Colorado #downslope
This & more in today's *Premium* Storm Update: bouldercast.com/storm-update... #COwx #Colorado #downslope
December 9, 2025 at 2:58 PM
🏔️💨 A powerful mountain wave setup is already driving Foothill gusts past 90 MPH, and it only gets worse through the day. Lesser winds but still very blustery for the lower elevations.
This & more in today's *Premium* Storm Update: bouldercast.com/storm-update... #COwx #Colorado #downslope
This & more in today's *Premium* Storm Update: bouldercast.com/storm-update... #COwx #Colorado #downslope
Nederland: sustained 40 MPH, gusting over 80 MPH on Tuesday
December 8, 2025 at 9:36 PM
Nederland: sustained 40 MPH, gusting over 80 MPH on Tuesday