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.

Partly Cloudy

80°F

27°C

Humidity 67%
Wind Speed E 5 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 Jun 11:52 am CDT
Extended Forecast for

Anna IL

  • Today

    Today: Partly sunny, with a high near 84. Light north wind.

    High: 84 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 9pm. Mostly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 80. Calm wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely then
    T-storms
    Likely

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. South southwest wind 3 to 8 mph.

    High: 88 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind 6 to 9 mph.

    Low: 74 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 87 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph.

    Low: 71 °F

    T-storms
    Likely

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. West northwest wind around 6 mph.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 84. Light north wind.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 9pm. Mostly cloudy, with a low around 70. Northeast wind around 5 mph becoming calm in the evening.
Monday
Showers and thunderstorms likely, mainly before 5pm. Mostly cloudy, with a high near 80. Calm wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. South southwest wind 3 to 8 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South wind 6 to 9 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 71. Southwest wind 6 to 10 mph.
Juneteenth
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. West northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 73. South wind around 6 mph.
Saturday
Sunny, with a high near 91. South southwest wind 6 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
11:16 am CDT Jun 15, 2025
Forecast Valid:
11am CDT Jun 15, 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