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.

Partly Cloudy

79°F

26°C

Humidity 39%
Wind Speed NW 5 mph
Barometer 30.19 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 28 Aug 4:55 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 75. North northeast wind around 5 mph.

    High: 75 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56. Northeast wind around 6 mph becoming calm in the evening.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Calm wind becoming west northwest around 5 mph.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. West northwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 76 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 52. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 75. North northeast wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 56. Northeast wind around 6 mph becoming calm in the evening.
Friday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Calm wind becoming west northwest around 5 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. West northwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 30%.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 52.
Labor Day
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
Last Update:
2:25 pm MDT Aug 28, 2025
Forecast Valid:
5pm MDT Aug 28, 2025-6pm MDT Sep 4, 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