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

Boulder Municipal Airport (KBDU)

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

Fair

46°F

8°C

Humidity 27%
Wind Speed W 15 G 18 mph
Barometer 30.13 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 7 Dec 11:55 am MST
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 43. South wind around 7 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

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

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 49. West southwest wind around 7 mph, with gusts as high as 17 mph.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. West wind 9 to 14 mph, with gusts as high as 29 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain. Partly sunny, with a high near 56.

    High: 56 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow. Partly sunny, with a high near 46.

    High: 46 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 43. South wind around 7 mph.
Tonight
Partly cloudy, with a low around 23. West wind around 6 mph.
Monday
Sunny, with a high near 49. West southwest wind around 7 mph, with gusts as high as 17 mph.
Monday Night
Partly cloudy, with a low around 31. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 57. West wind 9 to 14 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 56.
Wednesday Night
A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 33.
Thursday
A chance of rain and snow. Partly sunny, with a high near 46.
Thursday Night
A slight chance of rain and snow before 11pm, then a slight chance of snow. Mostly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 37.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 46.
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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:
4:26 am MST Dec 7, 2025
Forecast Valid:
12pm MST Dec 7, 2025-6pm MST Dec 13, 2025
 
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