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

Joliet Regional Airport (KJOT)

Lat: 41.52°NLon: 88.18°WElev: 572ft.

Partly Cloudy

78°F

26°C

Humidity 70%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 3 Aug 11:15 am CDT
Extended Forecast for

Symerton IL

  • Today

    Today: Mostly sunny, with a high near 82. Calm wind.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Calm wind becoming south southwest around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63. South southwest wind around 5 mph becoming calm.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming south southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. Calm wind.
Tonight
Mostly clear, with a low around 60. Calm wind.
Tuesday
Mostly sunny, with a high near 83. Calm wind becoming south southwest around 5 mph in the morning. Winds could gust as high as 10 mph.
Tuesday Night
Partly cloudy, with a low around 63. South southwest wind around 5 mph becoming calm.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming south southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Thursday Night
Mostly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Symerton IL
 41.35°N 88.06°W
Last Update:
10:30 am CDT Aug 3, 2026
Forecast Valid:
11am CDT Aug 3, 2026-6pm CDT Aug 9, 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