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.

Fair

92°F

33°C

Humidity 20%
Wind Speed NE 14 G 17 mph
Barometer 30.03 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 15 Jul 4:35 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a steady temperature around 91. North wind around 10 mph, with gusts as high as 16 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: 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 60. North wind 5 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Mostly cloudy, with a high near 83. Light and variable wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 70%.

    High: 83 °F

    Partly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 59. East southeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. Calm wind becoming southeast 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 92.

    High: 92 °F

    Partly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.

    Low: 61 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a steady temperature around 91. North wind around 10 mph, with gusts as high as 16 mph.
Tonight
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 60. North wind 5 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Wednesday
Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Mostly cloudy, with a high near 83. Light and variable wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight. Mostly cloudy, with a low around 59. East southeast wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Thursday
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 86. Calm wind becoming southeast 5 to 7 mph in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Mostly cloudy, with a low around 60.
Friday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 92.
Friday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.
Saturday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 90.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 61.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 62.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.19°N 105.09°W (Elev. 5010 ft)
Last Update:
2:47 pm MDT Jul 15, 2025
Forecast Valid:
4pm MDT Jul 15, 2025-6pm MDT Jul 22, 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