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.

Fair

61°F

16°C

Humidity 58%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Last update 3 Sep 7:55 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: Increasing clouds, with a high near 85. West northwest wind 5 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 16 mph.

    High: 85 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 54. South southeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 89. Light and variable wind becoming northeast around 6 mph in the morning. Winds could gust as high as 16 mph.

    High: 89 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 52. North wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph.

    Low: 52 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 73. Calm wind becoming east southeast around 6 mph in the morning.

    High: 73 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.

    High: 78 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Increasing clouds, with a high near 85. West northwest wind 5 to 10 mph becoming east northeast in the afternoon. Winds could gust as high as 16 mph.
Tonight
Mostly clear, with a low around 54. South southeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 16 mph.
Thursday
Increasing clouds, with a high near 89. Light and variable wind becoming northeast around 6 mph in the morning. Winds could gust as high as 16 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 52. North wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph.
Friday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 73. Calm wind becoming east southeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 49.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.
Saturday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Sunday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 80.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 53.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
Last Update:
4:01 am MDT Sep 3, 2025
Forecast Valid:
8am MDT Sep 3, 2025-6pm MDT Sep 9, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation