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.

N/A

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

4 Miles ENE Anna IL

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, sunny, with a high near 85. North wind 3 to 5 mph.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Areas of fog before 9am. Otherwise, sunny, with a high near 87. Calm wind.

    High: 87 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Wednesday Night

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

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 88 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 64. Calm wind.
Monday
Patchy fog before 8am. Otherwise, sunny, with a high near 85. North wind 3 to 5 mph.
Monday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 64. Calm wind.
Tuesday
Areas of fog before 9am. Otherwise, sunny, with a high near 87. Calm wind.
Tuesday Night
Mostly clear, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 88. Calm wind.
Wednesday Night
Mostly clear, with a low around 68. Calm wind.
Thursday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. Calm wind becoming south southwest around 5 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south southwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 70. Calm wind.
Sunday
Mostly sunny, with a high near 90. Calm wind becoming south southwest 5 to 7 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Anna IL
 37.48°N 89.19°W
Last Update:
1:01 am CDT Aug 3, 2026
Forecast Valid:
1am CDT Aug 3, 2026-6pm CDT Aug 9, 2026
 
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