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

Extreme Heat Overspreads the Central and Southern U.S., Pushing East Through Midweek; Severe Weather and Excessive Rain for Portions of the Upper Midwest

Dangerous heat is expected across portions of the Central and Southeast U.S. through July. Severe storms for parts of the northern Plains & upper Midwest tonight & Wednesday- threats include a few tornadoes, damaging winds & excessive rain. Heavy rain may impact portions of the Southeast and Southwest into tonight. A tropical disturbance brings heavy rain to Guam & the Marianas through Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

80°F

27°C

Humidity 94%
Wind Speed Calm
Barometer 30.05 in (1017.4 mb)
Dewpoint 78°F (26°C)
Visibility 9.00 mi
Heat Index86°F (30°C)
Last update 22 Jul 10:56 pm CDT
Extended Forecast for

Tamaroa IL

Extreme Heat Warning July 22, 11:39pm until July 24, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 22, 11:39pm until July 24, 07:00pm

    NOW until 7:00pm Thu

    Extreme Heat Warning

  • Tonight

    Low: 74 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 94. Heat index values as high as 110. South wind 3 to 6 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southeast wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 95. Heat index values as high as 107. South wind 5 to 8 mph.

    High: 95 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. South wind around 6 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. South southwest wind around 7 mph.

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South wind around 6 mph.

    Low: 75 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southwest wind 6 to 8 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 74. Light southeast wind.
Wednesday
Sunny, with a high near 94. Heat index values as high as 110. South wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 95. Heat index values as high as 107. South wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 76. South wind around 6 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. South southwest wind around 7 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South wind around 6 mph.
Saturday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southwest wind 6 to 8 mph.
Saturday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South southwest wind 3 to 6 mph.
Sunday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. West southwest wind 3 to 5 mph.
Sunday Night
Partly cloudy, with a low around 75. Light west wind.
Monday
Sunny, with a high near 95. Calm wind becoming north northwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 95. Calm wind becoming west around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tamaroa IL
 38.14°N 89.24°W
Last Update:
10:16 pm CDT Jul 22, 2025
Forecast Valid:
11pm CDT Jul 22, 2025-6pm CDT Jul 29, 2025
 
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