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.

Overcast

63°F

17°C

Humidity 82%
Wind Speed Calm
Barometer 30.23 in
Dewpoint 57°F (14°C)
Visibility 7.00 mi
Last update 30 Aug 4:35 am MDT
Extended Forecast for

Longmont CO

  • Overnight

    Overnight: A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 62. North wind around 7 mph.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 77. Northwest wind around 6 mph becoming calm. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers then
    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. Partly cloudy, with a low around 52. North northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. Northeast wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Tuesday Night

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

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers. Mostly cloudy, with a steady temperature around 62. North wind around 7 mph.
Saturday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 77. Northwest wind around 6 mph becoming calm. Chance of precipitation is 50%.
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. North northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 80. Calm wind becoming northeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 52. Northeast wind around 6 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.19°N 105.09°W (Elev. 5010 ft)
Last Update:
4:00 am MDT Aug 30, 2025
Forecast Valid:
4am MDT Aug 30, 2025-6pm MDT Sep 5, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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