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

Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >

Hazardous Weather Conditions

Current conditions at

Peoria - General Downing-Peoria International Airport (KPIA)

Lat: 40.67°NLon: 89.68°WElev: 659ft.

Overcast

64°F

18°C

Humidity 93%
Wind Speed SE 3 mph
Barometer 29.40 in (995.3 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 17 Jun 4:54 pm CDT
Extended Forecast for

Mackinaw IL

Flood Watch until June 17, 10:00pm
Tornado Watch until June 17, 10:00pm
Click here for hazard details and duration
Flood Watch
Tornado Watch
  •  
    Flood Watch until June 17, 10:00pm
    Tornado Watch until June 17, 10:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 76 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 9pm. Some of the storms could be severe. Mostly cloudy during the early evening, then gradual clearing, with a low around 60. West wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 74. West northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. West wind around 6 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the morning.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Light and variable wind.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

This Afternoon
Showers and thunderstorms. Some of the storms could be severe and produce heavy rainfall. High near 76. West southwest wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 9pm. Some of the storms could be severe. Mostly cloudy during the early evening, then gradual clearing, with a low around 60. West wind 11 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly sunny, with a high near 74. West northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 55. West wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 60. Light and variable wind.
Saturday
Mostly sunny, with a high near 82. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 62.
Sunday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 77. Chance of precipitation is 90%.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mackinaw IL
 40.54°N 89.36°W (Elev. 650 ft)
Last Update:
3:57 pm CDT Jun 17, 2026
Forecast Valid:
5pm CDT Jun 17, 2026-6pm CDT Jun 24, 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