Boulder set one final daily record high temperature on Monday reaching 81°, the 11th daily record high set since the Great March 2026 Western Heatwave began 13 days ago
Cooler, showery weather will unfold the next few days *Premium*: bouldercast.com/bouldercast-... #COwx #Boulderwx
18 different temperature records broken so far and one more to come on Monday in the final day of this historic March heatwave... #COwx #Boulderwx
🌡️ Another day, another record high in Boulder. Sunday reached 82° and was our 10th record high set in the last 12 days.
📖 More historical context: 9 of the warmest 11 March days recorded since 1893 have occurred in the last two weeks... #COWx #Boulderwx #colorado #Heatwave
Boulder soared to a high temperature of 80°F on Saturday breaking the daily record high for March 28th of 78° set in 1986. This was our 9th daily record high set in the last 11 days (1/2) #COWX #Boulderwx
Nothing like Mother Nature breaking the March 25th daily record high while you are still sipping your morning coffee ☕
Up to 79°F as of 11AM. Still another 7 to 10°F of warming expected during the sunny afternoon hours 🌞
#COwx #Boulderwx #Heatwave #Colorado
For the FIFTH day in a row, Boulder set a daily record high on Sunday March 22nd reaching 85°, though this reading technically occurred Saturday evening at 6PM local time. The prior record was 80° from 1910 #COWx #Boulderwx #Boulder
For the third day in a row, Boulder set a new March monthly record high temperature reaching 89°F on Saturday. Existing record before this week was 83° set in March of 1910 🌡️💥
Saturday also beat April's existing monthly record of 88° set in 1989.
#COWx #Boulderwx #Heatwave
Nothing official yet, but we have these confirmed highs across Boulder today:
🟠 Boulder Airport: 89.6 F
🟠 NCAR Foothills: 88.8 F
🟠 CU East Campus: 88.6 F
🟠 BoulderCAST Station: 88.4 F
Guessing the official high will be 88 or 89, but we'll see... #COWx #Boulderwx
This week's forecast verification. Forecast issued Monday morning. And yes, don't forget most areas had snow on the ground Monday morning! #COWX #Boulderwx
A NEW All-Time March Record High Temperature was set in Boulder on Thursday, March 19th at 85°F.... and it won't even last 24 hours. #COWx #Boulder #Boulderwx
❄️ 28.1" of snow in #Boulder so far this season which is 47% of the long-term normal.
We're safe from being that worst snow season on record. That one remains 1981-82 at 20.8" which we already eclipsed back in January. #COWX #Boulderwx
Heading for a high around 80° today in Boulder, which would tie the daily record high for March 18th from 2017 and also become the 2nd earliest 80° day on record, 3 days behind March 15 2015 #COwx #Boulderwx
The strongest wind gusts of the day have occurred in Boulder within the last 30 minutes. 40-55 MPH in town, up to 82 MPH at NCAR Mesa #COWX #Boulderwx
(1/3) Winds have been sporadically gusting 20 to 40 MPH in Boulder since about lunchtime with temperatures in the upper 60s and humidity under 15%. Red Flag conditions are ongoing and will continue into the evening. #COwx #Colorado #Boulderwx
A peak gust over 70MPH has already been recorded at Boulder's Mesa Lab, the windiest location within city limits at the base of the Flatirons.
The mountain wave won't be peaking until later on Thursday. There is a chance we get some gusts over 90MPH up there. #COWx #Boulderwx
💦 Well, the (heated) rain gauge in Boulder is reporting 0.66" of liquid so far making this our wettest calendar day in almost half a year since September 23rd. We should see an additional 0.10-0.25" before this storm wraps up later this evening. Hooray! #COwx #Boulderwx
Just in time for the developing wet snowstorm moving in, the new BoulderCAST webcam is online, now with 4K resolution & a wider field of view!📷
Find the new cam and dozens of other regional webcams, including the elusive snow table, here: bouldercast.com/boulder-webc... #COwx #Boulder #Boulderwx
Amazing, glowing display of gravity wave clouds seen over Indian Peaks west of Boulder Sunday evening!🏔️🌆 #COWx #Boulderwx #colorado
📸: Barb P. of Nederland
🚩 Red Flag conditions ongoing across portions of northeast Colorado this Friday afternoon.
Currently in Boulder: 65°F, 11% humidity, winds from the WNW at 17 MPH, gusting to 28 MPH. #COWX #Boulderwx
0.12" of precipitation and only a trace of snow month-to-date in Boulder. Though there is a chance of a couple RAINDROPS today, it won't amount to anything.
February 2026 is all but guaranteed to be our driest February since 1999 and least snowy since 1992. #COwx #Boulderwx
Hello again, wind! 👋
30 to 50 MPH gusts will be around all day in Boulder with elevated to near-critical fire danger.
More of the same tomorrow. And Friday. #COWx #Boulderwx
Continued exceptional warmth is expected the rest of February in the Front Range.
Tue: 70°
Wed: 68°
Thu: 62°
Fri: 66°
Sat: 68°
---MARCH---
Sun: 65°
Mon: 58°
If the forecast plays out as expected, Boulder's cold season warm day counts will end up as... #Boulderwx #COwx
Is La Niña over yet? Not quite, but we're getting close. NINO Region 3.4 continues to hold onto relatively cold waters, while other regions have warmed. El Niño is still favored to arrive in the late summer or early autumn. #COWx #Boulderwx
Boulder sets its second record high of 2026 on Sunday reaching 68°F. The prior record was 67° from 1982 & 2017. #COwx #Boulderwx
Flashback to this day 14 years ago when we were waking up to 23" of fresh snow in Boulder!
This remains the city's largest La Niña snowstorm and 9th largest overall since 1948.
This was the final notable snow event that winter before Colorado spiraled into extreme drought #COwx #Boulderwx
2nd day in a row with daytime highs only in the teens. +2°F low this morning was the coldest temp since February 18, 2025 at our station #COWX #Boulderwx
Gotta love DIA snow/precip measurements...
✅ Boulder 1.4" of snow, 0.07" of liquid = 20:1 snow ratio
🤷♀️ Denver 1.7" of snow, 0.02" of liquid = 85:1 snow ratio
#COwx #Boulderwx
