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

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Longmont CO

Winter Weather Advisory December 3, 12:00am until December 3, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow, mainly after 1am. Low around 25. Light and variable wind. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 25 °F

    Chance Snow
    then Snow

  • Wednesday

    Wednesday: Snow, mainly before 11am. High near 31. North northeast wind 3 to 7 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 31 °F

    Snow then
    Chance Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Light west wind.

    Low: 10 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 37. West southwest wind around 5 mph.

    High: 37 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 20. West wind around 6 mph.

    Low: 20 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 23.

    Low: 23 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A slight chance of rain and snow before 11am, then a chance of rain. Partly sunny, with a high near 47.

    High: 47 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain and snow. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Snow, mainly after 1am. Low around 25. Light and variable wind. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.
Wednesday
Snow, mainly before 11am. High near 31. North northeast wind 3 to 7 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
A 20 percent chance of snow before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Light west wind.
Thursday
Sunny, with a high near 37. West southwest wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 20. West wind around 6 mph.
Friday
Mostly sunny, with a high near 39.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 23.
Saturday
A slight chance of rain and snow before 11am, then a chance of rain. Partly sunny, with a high near 47.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Sunday
A slight chance of rain and snow before 11am. Mostly sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 53.
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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:
2:21 pm MST Dec 2, 2025
Forecast Valid:
8pm MST Dec 2, 2025-6pm MST Dec 9, 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