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 >

Current conditions at

Boulder Municipal Airport (KBDU)

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

Fair

86°F

30°C

Humidity 13%
Wind Speed W 13 G 25 mph
Barometer 29.79 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 17 Jun 9:35 am MDT
Extended Forecast for

3 Miles SW Boulder CO

  • Today

    Today: Sunny, with a high near 90. Breezy, with a west northwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 90 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 51. West northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light and variable wind becoming east northeast around 6 mph in the morning.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. East northeast wind around 6 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °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. Mostly sunny, with a high near 83.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 90. Breezy, with a west northwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 51. West northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Thursday
Sunny, with a high near 81. Light and variable wind becoming east northeast around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 60. East northeast wind around 6 mph becoming calm in the evening.
Juneteenth
Mostly sunny, with a high near 85. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63.
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. Mostly sunny, with a high near 83.
Sunday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 80.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 58.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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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 am MDT Jun 17, 2026
Forecast Valid:
9am MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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