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

Heavy Rainfall and Severe Weather Possible in the Midwest; Dangerous Heatwave Coming to the West

Widespread heavy rains, localized flash flooding, and severe thunderstorms are possible through Friday from the Central Plains northeastward into the Middle Mississippi Valley and Great Lakes region. A potential historic heat wave is possible for the Northwest this weekend. Numerous record highs are likely. Read More >

Hazardous Weather Conditions

Current conditions at

Vance Brand Airport (KLMO)

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

Fair

69°F

21°C

Humidity 58%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 24 Jun 7:15 am MDT
Extended Forecast for

Longmont CO

  • Today

    Today: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 87. West wind 5 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.

    Chance
    Showers then
    Chance
    T-storms

    High: 87 °F

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 15 mph.

    Chance
    T-storms then
    Chance
    Showers

    Low: 58 °F

  • Friday

    Friday: A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 76. Light and variable wind becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%.

    Chance
    Showers then
    T-storms

    High: 76 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms likely before 9pm, then showers likely and possibly a thunderstorm between 9pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 56. North northeast wind 5 to 9 mph becoming light and variable in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 56 °F

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 73. North northeast wind 3 to 6 mph. Chance of precipitation is 60%.

    Showers
    Likely

    High: 73 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 55.

    Chance
    T-storms

    Low: 55 °F

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 9am. Mostly sunny, with a high near 74. Chance of precipitation is 40%.

    Chance
    T-storms

    High: 74 °F

  • Sunday
    Night

    Sunday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 54 °F

  • Monday

    Monday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.

    Sunny then
    Slight Chance
    T-storms

    High: 77 °F

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 87. West wind 5 to 11 mph becoming east northeast in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Friday
A chance of showers before 9am, then a chance of showers and thunderstorms between 9am and noon, then showers and possibly a thunderstorm after noon. High near 76. Light and variable wind becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 80%.
Friday Night
Showers and thunderstorms likely before 9pm, then showers likely and possibly a thunderstorm between 9pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 56. North northeast wind 5 to 9 mph becoming light and variable in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 73. North northeast wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 55.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 9am. Mostly sunny, with a high near 74. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.
Monday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77.
Monday Night
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 54.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 87.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Longmont CO
 40.16°N 105.09°W (Elev. 4980 ft)
Last Update:
3:33 am MDT Jun 24, 2021
Forecast Valid:
7am MDT Jun 24, 2021-6pm MDT Jun 30, 2021
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation