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

39°F

4°C

Humidity 69%
Wind Speed Calm
Barometer 29.85 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 1 Apr 3:35 am MDT
Extended Forecast for

Longmont CO

  • Overnight

    Overnight: A 20 percent chance of showers before 5am. Cloudy, with a low around 38. North wind 3 to 5 mph.

    Low: 38 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 3pm. Mostly cloudy, with a high near 59. Light north northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 70%.

    High: 59 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers, mainly before 9pm. Mostly cloudy, with a low around 37. North northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 17 mph.

    Low: 37 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 73. Breezy, with a light south southwest wind becoming west southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.

    High: 73 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A chance of rain showers before 3am, then a chance of snow showers. Mostly cloudy, with a low around 35. Breezy, with a west southwest wind 10 to 15 mph becoming north northwest in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 30%.

    Low: 35 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    Rain/Snow

  • Friday

    Friday: A slight chance of snow showers before 3pm, then a slight chance of rain and snow showers. Mostly sunny, with a high near 55. Breezy. Chance of precipitation is 20%.

    High: 55 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29. Blustery.

    Low: 29 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers before 5am. Cloudy, with a low around 38. North wind 3 to 5 mph.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 3pm. Mostly cloudy, with a high near 59. Light north northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers, mainly before 9pm. Mostly cloudy, with a low around 37. North northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 17 mph.
Thursday
Sunny, with a high near 73. Breezy, with a light south southwest wind becoming west southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
A chance of rain showers before 3am, then a chance of snow showers. Mostly cloudy, with a low around 35. Breezy, with a west southwest wind 10 to 15 mph becoming north northwest in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 30%.
Friday
A slight chance of snow showers before 3pm, then a slight chance of rain and snow showers. Mostly sunny, with a high near 55. Breezy. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 29. Blustery.
Saturday
Sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
Last Update:
3:10 am MDT Apr 1, 2026
Forecast Valid:
3am MDT Apr 1, 2026-6pm MDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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