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.

A Few Clouds

53°F

12°C

Humidity 74%
Wind Speed N 15 mph
Barometer 29.88 in (1011.7 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 11 Nov 10:52 pm CST
Extended Forecast for

Anna IL

  • Tonight

    Tonight: Mostly clear, with a low around 43. North northwest wind 7 to 11 mph, with gusts as high as 26 mph.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 54. North northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. North northwest wind 7 to 13 mph, with gusts as high as 18 mph.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 46. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 46 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 26. North northwest wind around 6 mph becoming calm in the evening.

    Low: 26 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 48. Light north wind.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 52. Light east wind.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 43. North northwest wind 7 to 11 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 54. North northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 23 mph.
Thursday Night
Mostly clear, with a low around 33. North northwest wind 7 to 13 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 46. North northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Friday Night
Clear, with a low around 26. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 48. Light north wind.
Saturday Night
Mostly clear, with a low around 27. Calm wind.
Sunday
Mostly sunny, with a high near 52. Light east wind.
Sunday Night
Partly cloudy, with a low around 33. Calm wind.
Monday
Sunny, with a high near 51. Calm wind becoming east northeast around 6 mph.
Monday Night
Mostly clear, with a low around 31. Calm wind.
Tuesday
Sunny, with a high near 55. Calm wind becoming east northeast around 5 mph.
Tuesday Night
Clear, with a low around 32. Calm wind.
Wednesday
Sunny, with a high near 59. Calm wind becoming southeast around 5 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Anna IL
 37.45°N 89.24°W
Last Update:
10:51 pm CST Nov 11, 2026
Forecast Valid:
11pm CST Nov 11, 2026-6pm CST Nov 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation