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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Boulder Municipal Airport (KBDU)

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

Fair

77°F

25°C

Humidity 30%
Wind Speed NE 10 mph
Barometer 29.89 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 17 Jun 9:15 pm MDT
Extended Forecast for

3 Miles SW Boulder CO

  • Tonight

    Tonight: Mostly clear, with a low around 53. North wind 5 to 7 mph becoming calm after midnight.

    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. North wind 5 to 7 mph becoming calm after midnight.
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:
9pm MDT Jun 17, 2026-6pm MDT Jun 24, 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