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

Peoria - General Downing-Peoria International Airport (KPIA)

Lat: 40.67°NLon: 89.68°WElev: 659ft.

Fair

88°F

31°C

Humidity 31%
Wind Speed SW 6 mph
Barometer 30.12 in (1019.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 3 Oct 3:54 pm CDT
Extended Forecast for

South Pekin IL

  • Tonight

    Tonight: Mostly clear, with a low around 63. South wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89. South wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60. South wind around 7 mph, with gusts as high as 16 mph.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 62. South wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87. South southwest wind 5 to 7 mph.

    High: 87 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely after 1am. Partly cloudy, with a low around 59. South southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 75.

    High: 75 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 89. South wind 5 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Clear, with a low around 60. South wind around 7 mph, with gusts as high as 16 mph.
Sunday
Sunny, with a high near 87. South wind 7 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Clear, with a low around 62. South wind 6 to 10 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87. South southwest wind 5 to 7 mph.
Monday Night
A chance of showers and thunderstorms, then showers likely after 1am. Partly cloudy, with a low around 59. South southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 47.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Pekin IL
 40.5°N 89.65°W (Elev. 509 ft)
Last Update:
4:15 pm CDT Oct 3, 2025
Forecast Valid:
4pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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