Heavy Rainfall in the Southern Plains and Mississippi Valley; Thunderstorms in Eastern Colorado on Thursday

A multiple day heavy rainfall event will begin to set up from the Southern Plains into the Mississippi Valley Thursday, peaking in intensity over the holiday weekend. Widely scattered thunderstorms are expected to develop across eastern Colorado Thursday afternoon and evening. Large hail will be the primary hazard. Read More >

Current conditions at

Boulder Municipal Airport (KBDU)

Lat: 40.04°NLon: 105.23°WElev: 5288ft.

Drizzle

52°F

11°C

Humidity 77%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 20 May 9:55 pm MDT
Extended Forecast for

3 Miles NNE Boulder CO

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Light west southwest wind.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 66. Calm wind becoming north northwest 5 to 7 mph in the afternoon.

    High: 66 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 41. North wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 40%.

    Low: 41 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 63. Calm wind becoming east northeast around 6 mph in the morning.  Chance of precipitation is 40%.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 43. East wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 43 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. Light west southwest wind.
Thursday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66. Calm wind becoming north northwest 5 to 7 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 41. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Friday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 63. Calm wind becoming east northeast around 6 mph in the morning. Chance of precipitation is 40%.
Friday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 43. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 51.
Memorial Day
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 82.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Boulder CO
 40.07°N 105.22°W (Elev. 5200 ft)
12:46 pm MDT May 20, 2026
10pm MDT May 20, 2026-6pm MDT May 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