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

Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Anna ILSimilar City Names

Flash Flood Warning until July 14, 04:45am
Click here for hazard details and duration
Flash Flood Warning
  •  
    Flash Flood Warning until July 14, 04:45am

    NOW until 4:45am Mon

    Flash Flood Warning

  • Overnight

    Low: 72 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 86. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 86 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south wind.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. South southwest wind 3 to 7 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind 3 to 6 mph.

    Low: 74 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. South southwest wind 5 to 8 mph.

    High: 91 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Cloudy, with a low around 72. Calm wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 86. Calm wind becoming south southwest around 5 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south wind.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 90. South southwest wind 3 to 7 mph. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. South southwest wind 5 to 8 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. South southwest wind 3 to 6 mph.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. South southwest wind 3 to 6 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Light and variable wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Southwest wind 3 to 6 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. Southeast wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Anna ILSimilar City Names
 37.45°N 89.24°W
Last Update:
10:47 pm CDT Jul 13, 2025
Forecast Valid:
1am CDT Jul 14, 2025-6pm CDT Jul 20, 2025
 
Forecast Discussion
 
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Additional Resources

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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