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

Hazardous Weather Conditions

Current conditions at

Joliet Regional Airport (KJOT)

Lat: 41.52°NLon: 88.18°WElev: 572ft.

Fair

23°C

73°F

Humidity 100%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 23°C (73°F)
Visibility 11 km
Last update 15 Jul 4:55 am CDT
Extended Forecast for

Joliet IL

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 34. Heat index values as high as 39. West wind 5 to 10 km/h.

    High: 34 °C

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 23. West northwest wind 5 to 10 km/h becoming calm in the evening.

    Low: 23 °C

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 34. Heat index values as high as 38. Calm wind becoming south southwest 5 to 10 km/h in the afternoon.

    High: 34 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 22. East wind 5 to 10 km/h. Chance of precipitation is 20%.

    Low: 22 °C

    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 32. Southwest wind 5 to 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 70%.

    High: 32 °C

    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 22.

    Low: 22 °C

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 33.

    High: 33 °C

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 21.

    Low: 21 °C

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 31.

    High: 31 °C

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 34. Heat index values as high as 39. West wind 5 to 10 km/h.
Tonight
Partly cloudy, with a low around 23. West northwest wind 5 to 10 km/h becoming calm in the evening.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 34. Heat index values as high as 38. Calm wind becoming south southwest 5 to 10 km/h in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 22. East wind 5 to 10 km/h. Chance of precipitation is 20%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 32. Southwest wind 5 to 10 km/h, with gusts as high as 20 km/h. Chance of precipitation is 70%.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 22.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 33.
Saturday Night
Mostly clear, with a low around 21.
Sunday
Sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 20.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 32.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 21.
Tuesday
Sunny, with a high near 29.
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ABOUT THIS FORECAST

 
Point Forecast:
Joliet IL
 41.52°N 88.11°W
Last Update:
2:46 am CDT Jul 15, 2026
Forecast Valid:
5am CDT Jul 15, 2026-6pm CDT Jul 21, 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