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.

Overcast

48°F

9°C

Humidity 48%
Wind Speed E 5 mph
Barometer 30.16 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 30 Apr 3:35 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a high near 47. North northeast wind around 7 mph. Chance of precipitation is 70%.

    High: 47 °F

    Showers
    Likely

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before 3am. Mostly cloudy, with a low around 35. North wind around 6 mph becoming light and variable after midnight.

    Low: 35 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. Calm wind becoming northeast 5 to 7 mph in the afternoon.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 34. Northeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 71 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Cloudy, with a high near 47. North northeast wind around 7 mph. Chance of precipitation is 70%.
Tonight
A 50 percent chance of showers, mainly before 3am. Mostly cloudy, with a low around 35. North wind around 6 mph becoming light and variable after midnight.
Friday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. Calm wind becoming northeast 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 34. Northeast wind 5 to 7 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Partly sunny, with a high near 76.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 72.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 43.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 64.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 39.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
Last Update:
2:36 pm MDT Apr 30, 2026
Forecast Valid:
3pm MDT Apr 30, 2026-6pm MDT May 6, 2026
 
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