National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Vance Brand Airport (KLMO)

Lat: 40.16°NLon: 105.16°WElev: 5039ft.

Partly Cloudy

86°F

30°C

Humidity 30%
Wind Speed NE 5 mph
Barometer 30.20 in
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 27 Aug 3:55 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. North northeast wind around 7 mph.

    High: 90 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 60. North northeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday 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 63. West southwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 95. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 95 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 63. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. North northeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 60. North northeast wind 5 to 7 mph becoming light and variable after midnight.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96. Light and variable wind becoming west northwest 5 to 10 mph in the afternoon. Winds could gust as high as 17 mph.
Friday 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 63. West southwest wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 95. Calm wind becoming south 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 63. Chance of precipitation is 20%.
Sunday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.
Monday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 87.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
Last Update:
12:45 pm MDT Aug 27, 2026
Forecast Valid:
4pm MDT Aug 27, 2026-6pm MDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation