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.

Fair

84°F

29°C

Humidity 43%
Wind Speed SW 3 mph
Barometer 30.09 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 30 Jul 1:35 pm CDT
Extended Forecast for

Joliet IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 85. South wind around 5 mph.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. South southwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 4pm. Increasing clouds, with a high near 81. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 81 °F

    Partly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Low around 66. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.

    Low: 66 °F

    Heavy Rain

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 74. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    High: 74 °F

    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 85. South wind around 5 mph.
Tonight
Mostly cloudy, with a low around 64. South southwest wind around 5 mph becoming calm in the evening.
Friday
Showers likely, mainly after 4pm. Increasing clouds, with a high near 81. South southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers likely, then showers and possibly a thunderstorm after 10pm. Some of the storms could produce heavy rainfall. Low around 66. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm. High near 74. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday Night
A 40 percent chance of showers before 1am. Mostly cloudy, with a low around 65.
Sunday
Partly sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Joliet IL
 41.52°N 88.11°W
Last Update:
1:31 pm CDT Jul 30, 2026
Forecast Valid:
1pm CDT Jul 30, 2026-6pm CDT Aug 5, 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