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, 04:24pm until December 3, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 3, 04:24pm until December 3, 06:00pm

    NOW until 6:00pm Wed

    Winter Weather Advisory

  • This Afternoon

    High: 33 °F

    Chance Snow

  • Tonight

    Tonight: A 10 percent chance of snow before 7pm. Patchy fog after 1am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 10. Light west wind.

    Low: 10 °F

    Slight Chance
    Snow then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, sunny, with a high near 33. South southwest wind around 6 mph.

    High: 33 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. West southwest wind around 6 mph.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 40. West wind around 5 mph becoming light and variable in the afternoon.

    High: 40 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A chance of snow before 11am, then a chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 30%.

    High: 41 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain and snow before 11pm, then a slight chance of snow. Partly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
A 30 percent chance of snow, mainly before 5pm. Cloudy, with a high near 33. East northeast wind around 5 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 10 percent chance of snow before 7pm. Patchy fog after 1am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 10. Light west wind.
Thursday
Patchy fog before 10am. Otherwise, sunny, with a high near 33. South southwest wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 19. West southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 40. West wind around 5 mph becoming light and variable in the afternoon.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 22.
Saturday
A chance of snow before 11am, then a chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 30%.
Saturday Night
A slight chance of rain and snow before 11pm, then a slight chance of snow. Partly cloudy, with a low around 20.
Sunday
Sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 48.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 53.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
A slight chance of rain and snow. Partly sunny, with a high near 55.
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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:
4:05 pm MST Dec 3, 2025
Forecast Valid:
4pm MST Dec 3, 2025-6pm MST Dec 10, 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