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.

Fair

89°F

32°C

Humidity 39%
Wind Speed SW 10 G 21 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 12 Oct 1:52 pm CDT
Extended Forecast for

Altenburg MO

  • Columbus Day

    Columbus Day: Sunny, with a high near 90. Southwest wind 11 to 13 mph, with gusts as high as 18 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 62. South southwest wind 6 to 8 mph.

    Low: 62 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South southwest wind 5 to 10 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 2am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 71. South southwest wind around 5 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. West southwest wind 3 to 5 mph. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 60%.

    High: 85 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 56. Light and variable wind becoming north northwest 6 to 11 mph after midnight.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 65. Breezy, with a north northwest wind 17 to 20 mph, with gusts as high as 28 mph.

    High: 65 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Columbus Day
Sunny, with a high near 90. Southwest wind 11 to 13 mph, with gusts as high as 18 mph.
Tonight
Clear, with a low around 62. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 93. South southwest wind 5 to 10 mph.
Tuesday Night
A slight chance of showers before 2am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 71. South southwest wind around 5 mph. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. West southwest wind 3 to 5 mph. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. Calm wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 60%.
Thursday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 56. Light and variable wind becoming north northwest 6 to 11 mph after midnight.
Friday
Mostly sunny, with a high near 65. Breezy, with a north northwest wind 17 to 20 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 43. North wind 6 to 14 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 62. Northeast wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 39. Calm wind.
Sunday
Sunny, with a high near 70. Calm wind becoming south around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Altenburg MO
 37.62°N 89.57°W
Last Update:
1:26 pm CDT Oct 12, 2026
Forecast Valid:
2pm CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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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