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

37°F

3°C

Humidity 70%
Wind Speed N 14 mph
Barometer 30.36 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 1 Mar 9:53 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Today

    Today: Partly sunny, with a high near 50. Northeast wind around 11 mph, with gusts as high as 18 mph.

    High: 50 °F

    Partly Sunny

  • Tonight

    Tonight: Showers, mainly after 9pm. Low around 36. East northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.

    Low: 36 °F

    Showers
    Likely then
    Showers

  • Monday

    Monday: Showers likely, mainly before noon. Cloudy, with a high near 48. East wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 48 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 44. East wind 5 to 9 mph becoming south southeast after midnight. Chance of precipitation is 60%.

    Low: 44 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 40 percent chance of showers. Mostly cloudy, with a high near 70. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 70 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 58. South wind 7 to 9 mph.

    Low: 58 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 70. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. South southwest wind around 9 mph.

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 70. South southwest wind 8 to 11 mph.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 50. Northeast wind around 11 mph, with gusts as high as 18 mph.
Tonight
Showers, mainly after 9pm. Low around 36. East northeast wind around 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.
Monday
Showers likely, mainly before noon. Cloudy, with a high near 48. East wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 44. East wind 5 to 9 mph becoming south southeast after midnight. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 70. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 58. South wind 7 to 9 mph.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 70. South southwest wind 9 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. South southwest wind around 9 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 70. South southwest wind 8 to 11 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South wind around 9 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Friday Night
Showers and thunderstorms likely. Partly cloudy, with a low around 55. South wind around 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely. Cloudy, with a high near 66. Southwest wind 9 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
Last Update:
7:56 am CST Mar 1, 2026
Forecast Valid:
10am CST Mar 1, 2026-6pm CST Mar 7, 2026
 
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