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.

Partly Cloudy

32°C

89°F

Humidity 22%
Wind Speed S 11 km/h
Barometer 30.05 in
Dewpoint 8°C (46°F)
Visibility 16 km
Heat Index30°C (86°F)
Last update 14 Jul 3:15 pm MDT
Extended Forecast for

Longmont CO

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 35. North northeast wind 11 to 16 km/h becoming south southwest. Winds could gust as high as 27 km/h.

    High: 35 °C

    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 15. South southwest wind 11 to 16 km/h becoming northwest 5 to 10 km/h after midnight. Winds could gust as high as 27 km/h. Chance of precipitation is 20%.

    Low: 15 °C

    Slight Chance
    T-storms then
    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 36. West northwest wind 5 to 13 km/h becoming south in the afternoon.

    High: 36 °C

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday 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 16. West northwest wind 8 to 13 km/h becoming light and variable after midnight. Winds could gust as high as 27 km/h. Chance of precipitation is 20%.

    Low: 16 °C

    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. Partly sunny, with a high near 31. Light and variable wind becoming east 8 to 13 km/h in the morning. Winds could gust as high as 29 km/h. Chance of precipitation is 60%.

    High: 31 °C

    Partly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 14. Chance of precipitation is 50%.

    Low: 14 °C

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 31.

    High: 31 °C

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16.

    Low: 16 °C

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 34.

    High: 34 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 35. North northeast wind 11 to 16 km/h becoming south southwest. Winds could gust as high as 27 km/h.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 15. South southwest wind 11 to 16 km/h becoming northwest 5 to 10 km/h after midnight. Winds could gust as high as 27 km/h. Chance of precipitation is 20%.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 36. West northwest wind 5 to 13 km/h becoming south in the afternoon.
Tuesday 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 16. West northwest wind 8 to 13 km/h becoming light and variable after midnight. Winds could gust as high as 27 km/h. Chance of precipitation is 20%.
Wednesday
Showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 31. Light and variable wind becoming east 8 to 13 km/h in the morning. Winds could gust as high as 29 km/h. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 14. Chance of precipitation is 50%.
Thursday
A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 31.
Thursday Night
Partly cloudy, with a low around 16.
Friday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 34.
Friday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 16.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 33.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 16.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 m)
Last Update:
3:23 pm MDT Jul 14, 2025
Forecast Valid:
3pm MDT Jul 14, 2025-6pm MDT Jul 20, 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