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

95°F

35°C

Humidity 11%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 3 Jul 3:15 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 95. East southeast wind around 9 mph, with gusts as high as 18 mph.

    High: 95 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 63. East southeast wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Independence Day

    Independence Day: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Partly sunny, with a high near 91. Calm wind becoming west northwest around 6 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 91 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Southwest wind around 6 mph becoming light and variable after midnight.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92.

    High: 92 °F

    Sunny then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 95. East southeast wind around 9 mph, with gusts as high as 18 mph.
Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers after 4am. Mostly cloudy, with a low around 63. East southeast wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Independence Day
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Partly sunny, with a high near 91. Calm wind becoming west northwest around 6 mph in the afternoon. Winds could gust as high as 16 mph.
Friday Night
Mostly clear, with a low around 59. Southwest wind around 6 mph becoming light and variable after midnight.
Saturday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.
Saturday Night
Mostly clear, with a low around 58.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 58.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 92.
Monday Night
Mostly clear, with a low around 58.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 96.
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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:
2:35 pm MDT Jul 3, 2025
Forecast Valid:
3pm MDT Jul 3, 2025-6pm MDT Jul 9, 2025
 
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