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September 2025 Climate Summary

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

A Few Clouds

82°F

28°C

Humidity	49%
Wind Speed	S 9 mph
Barometer	30.04 in (1016.7 mb)
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	6 Oct 2:52 pm CDT

More Information:

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

Extended Forecast for

Highland Park IL

This Afternoon
High: 80 °F
Chance
Showers
Tonight
Low: 58 °F
Showers
Likely
Tuesday
High: 65 °F
Chance
Showers
Tuesday Night
Low: 52 °F
Mostly Clear
Wednesday
High: 61 °F
Sunny
Wednesday Night
Low: 49 °F
Mostly Clear
Thursday
High: 62 °F
Sunny
Thursday Night
Low: 49 °F
Mostly Clear
Friday
High: 66 °F
Mostly Sunny

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 80. South southwest wind around 10 mph, with gusts as high as 15 mph.

Tonight

Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Cloudy, with a low around 58. North wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A 30 percent chance of showers, mainly before 10am. Cloudy through mid morning, then gradual clearing, with a high near 65. North wind around 15 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 52. North northwest wind 5 to 10 mph.

Wednesday

Sunny, with a high near 61. Northeast wind around 10 mph.

Wednesday Night

Mostly clear, with a low around 49.

Thursday

Sunny, with a high near 62.

Thursday Night

Mostly clear, with a low around 49.

Friday

Mostly sunny, with a high near 66.