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

88°F

31°C

Humidity 30%
Wind Speed NE 7 mph
Barometer 30.26 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 31 Jul 4:55 pm MDT
Extended Forecast for

Longmont CO

Heat Advisory August 2, 12:00pm until August 3, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 89. Northeast wind around 7 mph.

    High: 89 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 61. Northeast wind 5 to 7 mph becoming calm in the evening.

    Low: 61 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. East wind around 6 mph becoming calm after midnight.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. Calm wind becoming east southeast 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. Breezy.

    Low: 62 °F

    Slight Chance
    T-storms then
    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 89. Northeast wind around 7 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 61. Northeast wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 94. Light and variable wind becoming east around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 62. East wind around 6 mph becoming calm after midnight.
Sunday
Sunny and hot, with a high near 101. Calm wind becoming east southeast 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny and hot, with a high near 100.
Monday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 62. Breezy.
Tuesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny and hot, with a high near 98.
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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:
12:46 pm MDT Jul 31, 2026
Forecast Valid:
5pm MDT Jul 31, 2026-6pm MDT Aug 7, 2026
 
Forecast Discussion
 
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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