National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms and Heavy Rainfall Across the Central Plains and Central Appalachians

Severe thunderstorms producing damaging winds, heavy rainfall, hail and possibly a few tornadoes will continue through tonight across portions of Kansas and Oklahoma. Heavy rainfall will persist across the Central Appalachians through tonight, potentially leading to areas of flooding. The severe weather and heavy rainfall threat will shift into the lower Great Lakes on Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

Lat: 40.16°NLon: 105.16°WElev: 5039ft.

Fair

47°F

8°C

Humidity 86%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 Jun 4:35 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: Sunny, with a high near 84. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 56. East southeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 56 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 96. Calm wind becoming southeast 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. South southeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 102. Breezy, with a southwest wind 6 to 15 mph, with gusts as high as 30 mph.

    High: 102 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 84. Calm wind becoming east 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 56. East southeast wind 5 to 7 mph becoming light and variable after midnight.
Juneteenth
Sunny, with a high near 96. Calm wind becoming southeast 5 to 9 mph in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around 61. South southeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 15 mph.
Friday
Sunny and hot, with a high near 102. Breezy, with a southwest wind 6 to 15 mph, with gusts as high as 30 mph.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 95.
Sunday Night
Partly cloudy, with a low around 57.
Monday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 78.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
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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:
4:01 am MDT Jun 18, 2025
Forecast Valid:
4am MDT Jun 18, 2025-6pm MDT Jun 24, 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