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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

69°F

21°C

Humidity 63%
Wind Speed S 15 mph
Barometer 29.89 in (1011.9 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 26 Mar 2:52 am CDT
Extended Forecast for

2 Miles N Saint Johns IL

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 66. South southwest wind around 13 mph, with gusts as high as 23 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 33 mph.

    High: 87 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 43. South southwest wind 13 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

    Low: 43 °F

    Partly Cloudy
    then Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 53 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. North wind around 6 mph becoming east southeast in the afternoon.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. East southeast wind around 6 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66. South wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 66. South southwest wind around 13 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 87. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 33 mph.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 43. South southwest wind 13 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 16 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 31. North wind 6 to 14 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 56. North wind around 6 mph becoming east southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 40. East southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 66. South wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 55. South wind 9 to 11 mph, with gusts as high as 21 mph.
Monday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 78. South southwest wind 13 to 16 mph, with gusts as high as 23 mph.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 63. South wind 11 to 13 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 81. South southwest wind 13 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. South southwest wind around 15 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. South southwest wind 15 to 18 mph, with gusts as high as 28 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:
1:26 am CDT Mar 26, 2026
Forecast Valid:
3am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation