National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

Lat: 40.16°NLon: 105.16°WElev: 5039ft.

Fair

42°F

6°C

Humidity 21%
Wind Speed E 5 mph
Barometer 30.35 in
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 21 Feb 5:15 pm MST
Extended Forecast for

Longmont CO

  • Tonight

    Tonight: Mostly clear, with a low around 14. East northeast wind around 5 mph becoming calm in the evening.

    Low: 14 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 48. Calm wind becoming east southeast around 5 mph.

    High: 48 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22. Light and variable wind.

    Low: 22 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 64. Light west wind.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34. West wind around 6 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A chance of rain. Partly sunny, with a high near 64. Breezy.

    High: 64 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 14. East northeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 48. Calm wind becoming east southeast around 5 mph.
Sunday Night
Mostly clear, with a low around 22. Light and variable wind.
Monday
Mostly sunny, with a high near 64. Light west wind.
Monday Night
Mostly cloudy, with a low around 34. West wind around 6 mph.
Tuesday
Partly sunny, with a high near 69.
Tuesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 40.
Wednesday
A chance of rain. Partly sunny, with a high near 64. Breezy.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 31.
Thursday
Sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 33.
Friday
Sunny, with a high near 65. Breezy.
Friday Night
Partly cloudy, with a low around 33.
Saturday
A slight chance of rain. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
Last Update:
11:46 am MST Feb 21, 2026
Forecast Valid:
5pm MST Feb 21, 2026-6pm MST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation