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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Light Rain

72°F

22°C

Humidity 94%
Wind Speed NW 3 mph
Barometer 29.99 in (1015.2 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 16 Jun 2:52 am CDT
Extended Forecast for

Anna IL

Flood Watch June 16, 10:00am until June 17, 12:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms, mainly before 4pm. Some of the storms could produce heavy rainfall. High near 81. Calm wind becoming south southeast around 6 mph in the morning. Chance of precipitation is 90%.

    High: 81 °F

    Showers
    Likely then
    Heavy Rain

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 70. South southeast wind 3 to 5 mph. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms. Cloudy through mid morning, then gradual clearing, with a high near 86. Southwest wind 5 to 7 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. South wind 6 to 8 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: A slight chance of thunderstorms before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. West northwest wind around 6 mph.

    High: 85 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 70. Calm wind.
Monday
Showers and thunderstorms, mainly before 4pm. Some of the storms could produce heavy rainfall. High near 81. Calm wind becoming south southeast around 6 mph in the morning. Chance of precipitation is 90%.
Monday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 70. South southeast wind 3 to 5 mph. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of showers and thunderstorms. Cloudy through mid morning, then gradual clearing, with a high near 86. Southwest wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 73. South wind 6 to 8 mph.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Juneteenth
A slight chance of thunderstorms before 7am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. West northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
Sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 72. South wind around 6 mph.
Saturday
Sunny, with a high near 91. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 75. South wind 6 to 8 mph.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 91. South wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
3:31 am CDT Jun 16, 2025
Forecast Valid:
3am CDT Jun 16, 2025-6pm CDT Jun 22, 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