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

78°F

26°C

Humidity 12%
Wind Speed SE 6 mph
Barometer 30.03 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 21 Mar 10:55 am MDT
Extended Forecast for

Longmont CO

Red Flag Warning March 21, 02:00pm until March 21, 10:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Mostly sunny, with a high near 90. Breezy, with a west wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 90 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Breezy, with a west wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.

    Low: 47 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. East southeast wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 76. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 76 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 90. Breezy, with a west wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Partly cloudy, with a low around 47. Breezy, with a west wind 11 to 16 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Sunday
Mostly sunny, with a high near 67. Light and variable wind becoming east 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 41. East southeast wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 21 mph.
Monday
Partly sunny, with a high near 76. Calm wind becoming east 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.
Monday Night
Partly cloudy, with a low around 45.
Tuesday
Partly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 69.
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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:
12:46 am MDT Mar 21, 2026
Forecast Valid:
11am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation