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

Air Quality Alert

Current conditions at

Boulder Municipal Airport (KBDU)

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

Fair

86°F

30°C

Humidity	20%
Wind Speed	N 8 mph
Barometer	29.76 in
Dewpoint	41°F (5°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	17 Jun 7:35 pm MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Boulder CO

Tonight
Low: 55 °F
Mostly Clear
Thursday
High: 89 °F
Sunny
Thursday Night
Low: 59 °F
Increasing
Clouds
Juneteenth
High: 89 °F
Gradual
Clearing
Friday Night
Low: 61 °F
Mostly Clear
Saturday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Saturday Night
Low: 60 °F
Mostly Clear
Sunday
High: 89 °F
Sunny then
Slight Chance
T-storms
Sunday Night
Low: 57 °F
Chance
T-storms then
Partly Cloudy

Detailed Forecast

Tonight

Mostly clear, with a low around 55. 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 89. Calm wind becoming east northeast 5 to 7 mph in the morning.

Thursday Night

Increasing clouds, with a low around 59. Northeast wind around 6 mph becoming calm after midnight. Winds could gust as high as 15 mph.

Juneteenth

Cloudy through mid morning, then gradual clearing, with a high near 89. 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 61. East wind around 6 mph becoming calm in the evening.

Saturday

A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 96.

Saturday Night

Mostly clear, with a low around 60.

Sunday

A slight chance of showers and thunderstorms after noon. Sunny, with a high near 89.

Sunday Night

A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.

Monday

Showers and thunderstorms likely after noon. Mostly sunny, with a high near 85.