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

69°F

21°C

Humidity 55%
Wind Speed SW 3 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 27 Sep 11:54 am CDT
Extended Forecast for

Mackinaw ILSimilar City Names

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 75. Northeast wind 3 to 6 mph.

    High: 75 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Northeast wind 3 to 6 mph.

    Low: 50 °F

    Partly Cloudy

  • Monday

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

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Northeast wind around 5 mph becoming light and variable.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. South wind 5 to 8 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. Southeast wind 6 to 8 mph, with gusts as high as 15 mph.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 80. South wind 8 to 11 mph, with gusts as high as 17 mph.

    High: 80 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 75. Northeast wind 3 to 6 mph.
Tonight
Partly cloudy, with a low around 50. Northeast wind 3 to 6 mph.
Monday
Sunny, with a high near 76. Calm wind becoming northeast around 5 mph.
Monday Night
Mostly clear, with a low around 55. Northeast wind around 5 mph becoming light and variable.
Tuesday
Sunny, with a high near 79. South wind 5 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 64. Southeast wind 6 to 8 mph, with gusts as high as 15 mph.
Wednesday
Partly sunny, with a high near 80. South wind 8 to 11 mph, with gusts as high as 17 mph.
Wednesday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 68.
Thursday
Showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Friday
A chance of showers. Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mackinaw ILSimilar City Names
 40.54°N 89.36°W (Elev. 650 ft)
Last Update:
11:56 am CDT Sep 27, 2026
Forecast Valid:
12pm 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