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

Hazardous Weather Conditions

Current conditions at

Peoria - General Downing-Peoria International Airport (KPIA)

Lat: 40.67°NLon: 89.68°WElev: 659ft.

Fair

64°F

18°C

Humidity 78%
Wind Speed W 3 mph
Barometer 29.89 in (1011.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 May 9:54 pm CDT
Extended Forecast for

Mackinaw IL

  • Tonight

    Tonight: A 30 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming clear, with a low around 52. West southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 52 °F

    Chance
    Showers then
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68. North northwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44. North wind 5 to 10 mph becoming light north northeast in the evening. Winds could gust as high as 22 mph.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 73. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely after 1am. Increasing clouds, with a low around 53. South southeast wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. South southeast wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 82 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 59. South wind 3 to 8 mph. Winds could gust as high as 17 mph.

    Low: 59 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 50%.

    Low: 61 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 30 percent chance of showers before 11pm. Mostly cloudy, then gradually becoming clear, with a low around 52. West southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Wednesday
Sunny, with a high near 68. North northwest wind 10 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Clear, with a low around 44. North wind 5 to 10 mph becoming light north northeast in the evening. Winds could gust as high as 22 mph.
Thursday
Sunny, with a high near 73. Calm wind becoming south southeast around 5 mph in the afternoon.
Thursday Night
Showers likely after 1am. Increasing clouds, with a low around 53. South southeast wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of showers before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. South southeast wind 13 to 17 mph, with gusts as high as 28 mph.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly clear, with a low around 59. South wind 3 to 8 mph. Winds could gust as high as 17 mph.
Saturday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 87.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 61. Chance of precipitation is 50%.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 88.
Monday Night
Showers likely. Mostly cloudy, with a low around 63.
Tuesday
A chance of showers. Mostly cloudy, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mackinaw IL
 40.54°N 89.36°W (Elev. 650 ft)
Last Update:
9:36 pm CDT May 12, 2026
Forecast Valid:
10pm CDT May 12, 2026-6pm CDT May 19, 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