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

54°F

12°C

Humidity 90%
Wind Speed E 5 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 27 Sep 7:54 am CDT
Extended Forecast for

South Pekin IL

  • Today

    Today: Partly sunny, with a high near 74. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 74 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. Northeast wind around 5 mph becoming calm after midnight.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 76 °F

    Sunny

  • Monday Night

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

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Calm wind becoming south 5 to 7 mph in the morning.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63. South southeast wind 6 to 8 mph, with gusts as high as 16 mph.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 77. South wind around 8 mph, with gusts as high as 16 mph.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

Detailed Forecast

Today
Partly sunny, with a high near 74. Calm wind becoming north northeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 52. Northeast wind around 5 mph becoming calm after midnight.
Monday
Sunny, with a high near 76. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 53. Calm wind.
Tuesday
Mostly sunny, with a high near 78. Calm wind becoming south 5 to 7 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 63. South southeast wind 6 to 8 mph, with gusts as high as 16 mph.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 77. South wind around 8 mph, with gusts as high as 16 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
Showers. High near 74. Chance of precipitation is 80%.
Thursday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Friday
A chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A chance of showers. Mostly cloudy, with a low around 57.
Saturday
A chance of showers. Mostly sunny, with a high near 69.
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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:
7:36 am CDT Sep 27, 2026
Forecast Valid:
8am CDT Sep 27, 2026-6pm CDT Oct 3, 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