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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

75°F

24°C

Humidity 88%
Wind Speed NW 6 mph
Barometer 29.99 in (1015.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 14 Jun 9:52 pm CDT
Extended Forecast for

Anna ILSimilar City Names

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 68. Light north northwest wind.

    Low: 68 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 84. North wind 3 to 5 mph.

    High: 84 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 69. Light and variable wind.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 81. Light south wind. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 70. Calm wind becoming southwest around 5 mph after midnight.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 6 to 9 mph.

    High: 85 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 73. South southwest wind 7 to 9 mph.

    Low: 73 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 88 °F

    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 72. South southwest wind 7 to 9 mph.

    Low: 72 °F

    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 68. Light north northwest wind.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 84. North wind 3 to 5 mph.
Sunday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 69. Light and variable wind.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 81. Light south wind. Chance of precipitation is 40%.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 70. Calm wind becoming southwest around 5 mph after midnight.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 6 to 9 mph.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 73. South southwest wind 7 to 9 mph.
Wednesday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. South southwest wind 10 to 14 mph, with gusts as high as 24 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 72. South southwest wind 7 to 9 mph.
Juneteenth
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. West wind around 7 mph.
Thursday Night
Mostly clear, with a low around 69. Light and variable wind.
Friday
Mostly sunny, with a high near 90. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 74. South wind around 6 mph.
Saturday
Sunny, with a high near 91. South southwest wind 6 to 9 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna ILSimilar City Names
 37.45°N 89.24°W
Last Update:
9:01 pm CDT Jun 14, 2025
Forecast Valid:
10pm CDT Jun 14, 2025-6pm CDT Jun 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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