National Weather Service

News Headlines

August 9, 2026: Two Rounds of Severe Thunderstorms, Including Late Night Tornadoes in North-Central Illinois
August 11, 2026: Powerful Morning Derecho Produces Widespread Wind Damage and Tornadoes Across Northern Illinois and Northwest Indiana

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Mostly Cloudy

80°F

27°C

Humidity	49%
Wind Speed	N 13 G 24 mph
Barometer	29.95 in (1013.8 mb)
Dewpoint	59°F (15°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	22 Aug 2:52 pm CDT

More Information:

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

Extended Forecast for

Northbrook IL

This Afternoon
High: 80 °F
Slight Chance
T-storms
Tonight
Low: 59 °F
Slight Chance
T-storms then
Mostly Clear
Sunday
High: 76 °F
Sunny
Sunday Night
Low: 57 °F
Mostly Clear
Monday
High: 76 °F
Mostly Sunny
Monday Night
Low: 60 °F
Mostly Clear
Tuesday
High: 80 °F
Mostly Sunny
Tuesday Night
Low: 65 °F
Partly Cloudy
Wednesday
High: 84 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

A 20 percent chance of showers and thunderstorms. Sunny, with a high near 80. Northwest wind around 15 mph, with gusts as high as 20 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 59. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

Sunday

Sunny, with a high near 76. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

Sunday Night

Mostly clear, with a low around 57. North northwest wind around 5 mph becoming calm in the evening.

Monday

Mostly sunny, with a high near 76. Calm wind becoming northwest around 5 mph in the afternoon.

Monday Night

Mostly clear, with a low around 60.

Tuesday

Mostly sunny, with a high near 80.

Tuesday Night

Partly cloudy, with a low around 65.