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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Boulder Municipal Airport (KBDU)

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

Fair

91°F

33°C

Humidity 15%
Wind Speed E 3 mph
Barometer 29.73 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 17 Jun 3:55 pm MDT
Extended Forecast for

3 Miles SW Boulder CO

  • Tonight

    Tonight: Mostly clear, with a low around 53. West northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Calm wind becoming east northeast around 6 mph in the morning.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 60. Northeast wind around 5 mph becoming calm after midnight.

    Low: 60 °F

    Increasing
    Clouds

  • Juneteenth

    Juneteenth: Cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming east northeast around 6 mph in the morning.

    High: 83 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. Light and variable wind.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon. Sunny, with a high near 84.

    High: 84 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 53. West northwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 84. Calm wind becoming east northeast around 6 mph in the morning.
Thursday Night
Increasing clouds, with a low around 60. Northeast wind around 5 mph becoming calm after midnight.
Juneteenth
Cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming east northeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 62. Light and variable wind.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 61.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 84.
Sunday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.
Monday
Showers and thunderstorms likely after noon. Mostly sunny, with a high near 80.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 60.
Wednesday
A slight chance of showers and thunderstorms. Sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Boulder CO
 40°N 105.3°W (Elev. 6509 ft)
Last Update:
12:46 pm MDT Jun 17, 2026
Forecast Valid:
4pm MDT Jun 17, 2026-6pm MDT Jun 24, 2026
 
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