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

90°F

32°C

Humidity 20%
Wind Speed E 9 mph
Barometer 30.02 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 9 Aug 3:55 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Northeast wind around 7 mph.

    High: 88 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Northeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 57 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and thunderstorms likely after noon. Partly sunny, with a high near 77. Light and variable wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 60%.

    High: 77 °F

    Chance
    Showers then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. East northeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. Calm wind becoming east around 6 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Northeast wind around 7 mph.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Northeast wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Sunday
A chance of showers, then showers and thunderstorms likely after noon. Partly sunny, with a high near 77. Light and variable wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 53. East northeast wind around 6 mph becoming calm in the evening. Winds could gust as high as 15 mph. Chance of precipitation is 30%.
Monday
Sunny, with a high near 84. Calm wind becoming east around 6 mph in the afternoon. Winds could gust as high as 15 mph.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Mostly sunny, with a high near 95.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 96.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
Last Update:
2:37 pm MDT Aug 9, 2025
Forecast Valid:
4pm MDT Aug 9, 2025-6pm MDT Aug 16, 2025
 
Forecast Discussion
 
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Additional Resources

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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