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

65°F

18°C

Humidity 48%
Wind Speed NW 3 mph
Barometer 30.11 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 8 Oct 9:55 am CDT
Extended Forecast for

Seneca IL

  • Today

    Today: Sunny, with a high near 75. Light west northwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, then becoming sunny during the afternoon, with a high near 79. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 79 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Clear, with a low around 61. South wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 83. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 75. Light west northwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 15 mph.
Tonight
Mostly clear, with a low around 53. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly before noon. Mostly cloudy, then becoming sunny during the afternoon, with a high near 79. Light east wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Friday Night
Clear, with a low around 61. South wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday
Sunny, with a high near 83. South wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 60.
Sunday
Partly sunny, with a high near 75.
Sunday Night
Mostly clear, with a low around 57.
Columbus Day
Mostly sunny, with a high near 82.
Monday Night
A chance of showers. Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Seneca IL
 41.32°N 88.62°W
Last Update:
10:11 am CDT Oct 8, 2026
Forecast Valid:
10am CDT Oct 8, 2026-6pm CDT Oct 14, 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