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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair and Breezy

84°F

29°C

Humidity 34%
Wind Speed S 21 G 37 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 31 Mar 2:52 pm CDT
Extended Forecast for

2 Miles N Saint Johns IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 82. South southwest wind 16 to 18 mph, with gusts as high as 28 mph.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 63. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 63 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 5pm, then a chance of showers. Partly sunny, with a high near 81. South southwest wind 7 to 10 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Breezy, with a south wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.

    High: 79 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 63. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.

    Low: 63 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. South wind around 14 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 69. South southwest wind 14 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 69 °F

    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 82. South southwest wind 16 to 18 mph, with gusts as high as 28 mph.
Tonight
A 40 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 63. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday
Showers and thunderstorms likely before 5pm, then a chance of showers. Partly sunny, with a high near 81. South southwest wind 7 to 10 mph. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 25 mph.
Thursday
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 79. Breezy, with a south wind 17 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 60%.
Thursday Night
Showers and possibly a thunderstorm. Low around 63. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. South wind around 14 mph, with gusts as high as 23 mph.
Saturday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 69. South southwest wind 14 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 39. Northwest wind around 14 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 55. Northwest wind 13 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 34. North wind 5 to 10 mph.
Monday
Sunny, with a high near 62. East northeast wind 5 to 8 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:
2:01 pm CDT Mar 31, 2026
Forecast Valid:
3pm CDT Mar 31, 2026-6pm CDT Apr 6, 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