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

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northwestern Gulf Coast from south central Louisiana to the upper Texas coast today. Read More >

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Overcast

74°F

23°C

Humidity 37%
Wind Speed Calm
Barometer 30.24 in (1023.7 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 23 Jul 11:52 am CDT
Extended Forecast for

Forest Lake IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. Southwest wind around 5 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 81 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 84 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers. Mostly sunny, with a high near 92.

    High: 92 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. Southwest wind around 5 mph.
Tonight
Mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 60. Southwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Partly sunny, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
A chance of showers after 1am. Partly cloudy, with a low around 72.
Monday
A chance of showers. Mostly sunny, with a high near 92.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Forest Lake IL
 42.2°N 88.06°W
Last Update:
9:26 am CDT Jul 23, 2026
Forecast Valid:
12pm CDT Jul 23, 2026-6pm CDT Jul 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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