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 25%
Wind Speed W 17 G 26 mph
Barometer 30.11 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 7 Dec 1:35 pm MST
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 45. South wind 6 to 8 mph.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 23. South southwest wind around 7 mph becoming east after midnight.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 50. South southeast wind around 8 mph becoming west northwest in the morning. Winds could gust as high as 17 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 57. West wind around 14 mph, with gusts as high as 22 mph.

    High: 57 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

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

    High: 57 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. Breezy.

    Low: 40 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: A slight chance of rain before 11am, then a slight chance of rain and snow. Partly sunny, with a high near 56.

    High: 56 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 45. South wind 6 to 8 mph.
Tonight
Partly cloudy, with a low around 23. South southwest wind around 7 mph becoming east after midnight.
Monday
Sunny, with a high near 50. South southeast wind around 8 mph becoming west northwest in the morning. Winds could gust as high as 17 mph.
Monday Night
Partly cloudy, with a low around 30. West southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Tuesday
Partly sunny, with a high near 57. West wind around 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 57. Breezy.
Wednesday Night
Mostly cloudy, with a low around 40. Breezy.
Thursday
A slight chance of rain before 11am, then a slight chance of rain and snow. Partly sunny, with a high near 56.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 53.
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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:
1:27 pm MST Dec 7, 2025
Forecast Valid:
1pm 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