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

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

73°F

23°C

Humidity 71%
Wind Speed S 6 mph
Barometer 30.17 in (1021.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 3 Oct 6:52 pm CDT
Extended Forecast for

Anna IL

  • Tonight

    Tonight: Clear, with a low around 59. Light south wind.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57. Light southeast wind.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 84. South southeast wind 3 to 8 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. Southeast wind 3 to 5 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 81. South southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. Light east southeast wind.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.

    High: 80 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers. Mostly cloudy, with a low around 60. North northeast wind 5 to 7 mph.

    Low: 60 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 59. Light south wind.
Saturday
Sunny, with a high near 84. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Saturday Night
Clear, with a low around 57. Light southeast wind.
Sunday
Sunny, with a high near 84. South southeast wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 65. Southeast wind 3 to 5 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 81. South southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 65. Light east southeast wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 60. North northeast wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 75. North northeast wind around 9 mph.
Wednesday Night
Mostly clear, with a low around 55. Northeast wind around 7 mph.
Thursday
Sunny, with a high near 73. East wind around 7 mph.
Thursday Night
Mostly clear, with a low around 53. Light east northeast wind.
Friday
Sunny, with a high near 76. Calm wind becoming south around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
5:31 pm CDT Oct 3, 2025
Forecast Valid:
7pm CDT Oct 3, 2025-6pm CDT Oct 10, 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