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.

Overcast and Breezy

67°F

19°C

Humidity 79%
Wind Speed S 23 G 36 mph
Barometer 29.65 in (1003.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 8 Jan 7:52 pm CST
Extended Forecast for

Altenburg MO

Wind Advisory until January 9, 03:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until January 9, 03:00am

    NOW until 3:00am Fri

    Wind Advisory

  • Tonight

    Low: 50 °F

    Showers and
    Breezy then
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a temperature falling to around 50 by 8am. West wind 6 to 11 mph becoming north northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 55 °F⇓

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 42. North northeast wind around 6 mph.

    Low: 42 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon. Mostly cloudy, then gradually becoming sunny, with a high near 48. Northwest wind 6 to 14 mph, with gusts as high as 21 mph.

    High: 48 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. West northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 37. Northwest wind 8 to 13 mph becoming light in the afternoon. Winds could gust as high as 21 mph.

    High: 37 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 46. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 46 °F

    Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 2am. Low around 50. Breezy, with a south wind 19 to 24 mph becoming west southwest 13 to 18 mph after midnight. Winds could gust as high as 41 mph. Chance of precipitation is 80%.
Friday
Partly sunny, with a temperature falling to around 50 by 8am. West wind 6 to 11 mph becoming north northeast in the afternoon. Winds could gust as high as 21 mph.
Friday Night
A 30 percent chance of showers after midnight. Mostly cloudy, with a low around 42. North northeast wind around 6 mph.
Saturday
A 20 percent chance of showers before noon. Mostly cloudy, then gradually becoming sunny, with a high near 48. Northwest wind 6 to 14 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 26. West northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 37. Northwest wind 8 to 13 mph becoming light in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 23. Calm wind becoming south southwest around 5 mph after midnight.
Monday
Sunny, with a high near 46. South southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 32. South southwest wind 7 to 9 mph.
Tuesday
Mostly sunny, with a high near 54. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 36. South southwest wind 6 to 9 mph becoming west northwest after midnight.
Wednesday
Mostly cloudy, with a high near 44. Northwest wind 6 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 25. North northwest wind 6 to 9 mph.
Thursday
Mostly sunny, with a high near 38. North northwest wind around 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Altenburg MO
 37.62°N 89.57°W
Last Update:
8:33 pm CST Jan 8, 2026
Forecast Valid:
8pm CST Jan 8, 2026-6pm CST Jan 15, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation