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

Hazardous Weather Conditions

Current conditions at

Boulder Municipal Airport (KBDU)

Lat: 40.04°NLon: 105.23°WElev: 5288ft.

Mostly Cloudy

37°F

3°C

Humidity 70%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 6 Dec 6:35 pm MST
Extended Forecast for

Longmont CO

  • Tonight

    Tonight: Mostly clear, with a low around 23. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 43. West northwest wind around 7 mph becoming south in the afternoon.

    High: 43 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23. West wind around 6 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 49. West wind around 7 mph, with gusts as high as 16 mph.

    High: 49 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. West southwest wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. Breezy.

    High: 57 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A slight chance of rain. Partly sunny, with a high near 56. Breezy.

    High: 56 °F

    Slight Chance
    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Chance Rain
    and Breezy

Detailed Forecast

Tonight
Mostly clear, with a low around 23. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday
Sunny, with a high near 43. West northwest wind around 7 mph becoming south in the afternoon.
Sunday Night
Partly cloudy, with a low around 23. West wind around 6 mph.
Monday
Mostly sunny, with a high near 49. West wind around 7 mph, with gusts as high as 16 mph.
Monday Night
Partly cloudy, with a low around 31. West southwest wind 7 to 10 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 57. Breezy.
Tuesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 34.
Wednesday
A slight chance of rain. Partly sunny, with a high near 56. Breezy.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. Breezy.
Thursday
A chance of rain and snow. Partly sunny, with a high near 47.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.19°N 105.09°W (Elev. 5010 ft)
Last Update:
1:36 pm MST Dec 6, 2025
Forecast Valid:
6pm MST Dec 6, 2025-6pm MST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation