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

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 45. Light east northeast wind.

    High: 45 °F

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly after 1am. Low around 26. Calm wind becoming north northeast around 5 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 26 °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. Calm wind.

    Low: 10 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 38. West southwest wind 3 to 5 mph.

    High: 38 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight 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

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 45. Light east northeast wind.
Tonight
Snow, mainly after 1am. Low around 26. Calm wind becoming north northeast around 5 mph. Chance of precipitation is 80%. New 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. Calm wind.
Thursday
Sunny, with a high near 38. West southwest wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Mostly sunny, with a high near 40.
Friday Night
A slight 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. Mostly sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
Last Update:
2:21 pm MST Dec 2, 2025
Forecast Valid:
3pm MST Dec 2, 2025-6pm MST Dec 8, 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