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

Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago / Wheeling, Pal-Waukee Airport (KPWK)

Lat: 42.12°NLon: 87.9°WElev: 646ft.

Fair

70°F

21°C

Humidity 55%
Wind Speed S 15 mph
Barometer 29.77 in (1007.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 17 Oct 7:52 pm CDT
Extended Forecast for

Techny IL

  • Tonight

    Tonight: A slight chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 63. South southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 73. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 52. South southwest wind 5 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 57. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.

    High: 57 °F

    Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers after 1pm. Mostly sunny, with a high near 54. Breezy.

    High: 54 °F

    Breezy.
    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 63. South southwest wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers likely and possibly a thunderstorm before 10am, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 73. South southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 52. South southwest wind 5 to 15 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 57. Breezy, with a northwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%.
Sunday Night
Mostly clear, with a low around 45. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 66.
Monday Night
A 40 percent chance of showers, mainly before 1am. Partly cloudy, with a low around 48.
Tuesday
A chance of showers after 1pm. Mostly sunny, with a high near 54. Breezy.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Techny IL
 42.12°N 87.78°W
Last Update:
5:41 pm CDT Oct 17, 2025
Forecast Valid:
8pm CDT Oct 17, 2025-6pm CDT Oct 24, 2025
 
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