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

Areas of Heavy to Excessive Rainfall and Hot Temperatures This Week

Heavy to excessive rainfall could bring areas of flooding at times Monday through Thursday across parts of the central Plains into the Midwest as well as southern Arizona and New Mexico. Hot temperatures and high humidity will continue across much of east Texas into the lower and mid-Mississippi Valley through at least midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Joliet Regional Airport (KJOT)

Lat: 41.52°NLon: 88.18°WElev: 572ft.

Fair

53°F

12°C

Humidity 100%
Wind Speed Calm
Barometer 30.24 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 14 Sep 1:55 am CDT
Extended Forecast for

Diamond ILSimilar City Names

  • Overnight

    Overnight: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 77. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 77 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: A 10 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 84. South southwest wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. North wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 1pm. Mostly cloudy, with a high near 84.

    High: 84 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 66.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 50. Calm wind.
Monday
Increasing clouds, with a high near 77. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Monday Night
A 10 percent chance of showers and thunderstorms after 5am. Increasing clouds, with a low around 68. South southeast wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 84. South southwest wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. North wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Wednesday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Thursday
A chance of showers before 1pm. Mostly cloudy, with a high near 84.
Thursday Night
Mostly cloudy, with a low around 66.
Friday
A chance of showers after 1pm. Partly sunny, with a high near 83.
Friday Night
A chance of showers. Mostly cloudy, with a low around 66.
Saturday
A chance of showers. Partly sunny, with a high near 82.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 63.
Sunday
A chance of showers. Partly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Diamond ILSimilar City Names
 41.29°N 88.24°W
Last Update:
1:21 am CDT Sep 14, 2026
Forecast Valid:
2am CDT Sep 14, 2026-6pm CDT Sep 20, 2026
 
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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