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

90°F

32°C

Humidity 16%
Wind Speed NE 14 mph
Barometer 29.73 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Jun 2:35 pm MDT
Extended Forecast for

3 Miles WSW Boulder CO

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. Breezy, with a west northwest wind around 15 mph, with gusts as high as 24 mph.

    High: 90 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 54. West northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming east around 6 mph in the morning.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 61. Northeast wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.

    Low: 61 °F

    Increasing
    Clouds

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 85. Calm wind becoming east northeast 5 to 7 mph in the morning. Winds could gust as high as 16 mph.

    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 92.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon. Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 90. Breezy, with a west northwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 54. West northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Thursday
Sunny, with a high near 85. Calm wind becoming east around 6 mph in the morning.
Thursday Night
Increasing clouds, with a low around 61. Northeast wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.
Juneteenth
Mostly sunny, with a high near 85. Calm wind becoming east northeast 5 to 7 mph in the morning. Winds could gust as high as 16 mph.
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 92.
Saturday Night
Mostly clear, with a low around 62.
Sunday
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 81.
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 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Boulder CO
 40.02°N 105.31°W (Elev. 5951 ft)
Last Update:
12:46 pm MDT Jun 17, 2026
Forecast Valid:
2pm MDT Jun 17, 2026-6pm MDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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