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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

10°F

-12°C

Humidity 80%
Wind Speed SW 3 mph
Barometer 30.48 in (1032.7 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 20 Jan 12:52 am CST
Extended Forecast for

Anna IL

  • Overnight

    Overnight: Clear, with a steady temperature around 12. Calm wind.

    Low: 12 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 35. Light south southwest wind becoming south 6 to 11 mph in the morning.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow showers after 5am. Increasing clouds, with a low around 26. South wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Clear then
    Slight Chance
    Snow Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 8am. Partly sunny, with a high near 45. South southwest wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 45 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25. Southwest wind around 5 mph becoming light and variable.

    Low: 25 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 40. North wind around 6 mph.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 18. North northeast wind 3 to 7 mph.

    Low: 18 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 25. North wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 25 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of snow showers. Cloudy, with a low around 6. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 6 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Clear, with a steady temperature around 12. Calm wind.
Tuesday
Sunny, with a high near 35. Light south southwest wind becoming south 6 to 11 mph in the morning.
Tuesday Night
A 20 percent chance of snow showers after 5am. Increasing clouds, with a low around 26. South wind 9 to 14 mph, with gusts as high as 22 mph.
Wednesday
A 30 percent chance of showers, mainly before 8am. Partly sunny, with a high near 45. South southwest wind 6 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 25. Southwest wind around 5 mph becoming light and variable.
Thursday
Mostly sunny, with a high near 40. North wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 18. North northeast wind 3 to 7 mph.
Friday
Mostly cloudy, with a high near 25. North wind 8 to 13 mph, with gusts as high as 21 mph.
Friday Night
A chance of snow showers. Cloudy, with a low around 6. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 16. North northeast wind around 11 mph, with gusts as high as 20 mph.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 8. North wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 22. North wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 7. West northwest wind around 6 mph.
Monday
Sunny, with a high near 27. North northwest wind 5 to 7 mph becoming southwest 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:
12:46 am CST Jan 20, 2026
Forecast Valid:
1am CST Jan 20, 2026-6pm CST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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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