Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

Mostly Cloudy

67°F

19°C

Humidity 77%
Wind Speed NE 13 G 23 mph
Barometer 29.98 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 20 Jun 10:55 pm MDT
Extended Forecast for

Longmont CO

  • Tonight

    Tonight: Partly cloudy, with a low around 58. North wind 5 to 7 mph becoming calm  after midnight.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 91. Light and variable wind becoming north northwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 91 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. North northeast wind 9 to 14 mph becoming light and variable  in the evening. Winds could gust as high as 24 mph.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 88. Calm wind becoming northeast 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.

    High: 88 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. East southeast wind 5 to 8 mph becoming light and variable. Winds could gust as high as 17 mph.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 55.

    Low: 55 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. North wind 5 to 7 mph becoming calm after midnight.
Sunday
Sunny, with a high near 91. Light and variable wind becoming north northwest 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 55. North northeast wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 24 mph.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88. Calm wind becoming northeast 5 to 8 mph in the afternoon. Winds could gust as high as 17 mph.
Monday Night
Mostly clear, with a low around 55. East southeast wind 5 to 8 mph becoming light and variable. Winds could gust as high as 17 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81.
Tuesday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 55.
Wednesday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 55.
Thursday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Sunny and hot, with a high near 97. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Longmont CO
 40.16°N 105.12°W (Elev. 5000 ft)
12:46 pm MDT Jun 20, 2026
11pm MDT Jun 20, 2026-6pm MDT Jun 27, 2026
 
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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