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

56°F

13°C

Humidity 100%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 11:35 pm CDT
Extended Forecast for

Seneca IL

  • Tonight

    Tonight: Partly cloudy, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Sunny, with a high near 88. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 63. Northwest wind around 5 mph becoming calm. Chance of precipitation is 80%.

    Low: 63 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 10am. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 70.

    High: 70 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers before 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. South wind around 5 mph.
Columbus Day
Sunny, with a high near 88. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 86. West wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers and thunderstorms before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 63. Northwest wind around 5 mph becoming calm. Chance of precipitation is 80%.
Wednesday
Showers likely, mainly before 10am. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 57.
Thursday
Showers likely. Mostly cloudy, with a high near 70.
Thursday Night
A chance of showers before 1am. Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 61. Breezy.
Friday Night
Partly cloudy, with a low around 38.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 38.
Sunday
Sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Seneca IL
 41.3°N 88.62°W
Last Update:
9:56 pm CDT Oct 11, 2026
Forecast Valid:
11pm CDT Oct 11, 2026-6pm CDT Oct 18, 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