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.

Fair

54°F

12°C

Humidity 60%
Wind Speed Calm
Barometer 29.83 in
Dewpoint 40°F (4°C)
Visibility 7.00 mi
Last update 11 Oct 3:55 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: Partly sunny, with a high near 80. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 80 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. North northwest wind around 5 mph becoming light and variable after midnight.

    Low: 52 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Sunny, with a high near 79. Light and variable wind becoming south southwest around 6 mph in the morning. Winds could gust as high as 17 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 48. North northwest wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 26 mph.

    Low: 48 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 67. East northeast wind 3 to 6 mph.

    High: 67 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after noon. High near 59. Chance of precipitation is 80%.

    High: 59 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Showers
    Likely

  • Thursday

    Thursday: A slight chance of showers. Mostly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 80. Calm wind becoming east southeast around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 52. North northwest wind around 5 mph becoming light and variable after midnight.
Columbus Day
Sunny, with a high near 79. Light and variable wind becoming south southwest around 6 mph in the morning. Winds could gust as high as 17 mph.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 48. North northwest wind 6 to 11 mph becoming light north after midnight. Winds could gust as high as 26 mph.
Tuesday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 67. East northeast wind 3 to 6 mph.
Tuesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Wednesday
Showers, with thunderstorms also possible after noon. High near 59. Chance of precipitation is 80%.
Wednesday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 41.
Thursday
A slight chance of showers. Mostly sunny, with a high near 63.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 37.
Friday
A slight chance of showers. Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 36.
Saturday
Sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
Last Update:
12:46 am MDT Oct 11, 2026
Forecast Valid:
4am MDT Oct 11, 2026-6pm MDT Oct 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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