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Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Macomb Municipal Airport (KMQB)

Lat: 40.52°NLon: 90.65°WElev: 679ft.

Fair

66°F

19°C

Humidity 90%
Wind Speed S 13 mph
Barometer 29.90 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 18 May 10:15 pm CDT
Extended Forecast for

Tennessee IL

  • Tonight

    Tonight: Occasional showers and thunderstorms. Steady temperature around 70. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 74. South wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    High: 74 °F

    T-storms
    Likely then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 49. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Increasing clouds, with a high near 67. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 67 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.

    High: 68 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers

Detailed Forecast

Tonight
Occasional showers and thunderstorms. Steady temperature around 70. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and thunderstorms likely, mainly before 1pm. Mostly cloudy, with a high near 74. South wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 49. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Increasing clouds, with a high near 67. Northeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 51.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Friday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 54.
Saturday
Mostly cloudy, with a high near 77.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Partly sunny, with a high near 82.
Sunday Night
Mostly cloudy, with a low around 60.
Memorial Day
Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tennessee IL
 40.4°N 90.84°W (Elev. 653 ft)
Last Update:
10:02 pm CDT May 18, 2026
Forecast Valid:
11pm CDT May 18, 2026-6pm CDT May 25, 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