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Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Overcast
38°F
3°C
| Humidity | 57% |
| Wind Speed | S 10 mph |
| Barometer | 30.25 in (1024.8 mb) |
| Dewpoint | 24°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 31°F (-1°C) |
| Last update | 29 Nov 8:52 am CST |
Extended Forecast for
2 Miles N Saint Johns IL
Today
High: 40 °F
Wintry Mix
then Showers
and BreezyTonight
Low: 25 °F
Chance
Showers then
Mostly CloudySunday

High: 31 °F
Mostly Cloudy
Sunday Night

Low: 22 °F
Mostly Cloudy
Monday
High: 34 °F
Mostly Cloudy
then Slight
Chance Snow
ShowersMonday Night

Low: 24 °F
Snow Showers
Tuesday

High: 31 °F
Partly Sunny
Tuesday Night

Low: 17 °F
Partly Cloudy
Wednesday

High: 39 °F
Mostly Sunny
Detailed Forecast
Today
Snow showers, possibly mixed with sleet before 11am, then rain and snow showers between 11am and noon, then rain showers after noon. High near 40. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 100%. Total daytime snow and sleet accumulation of less than one inch possible.
Tonight
A 50 percent chance of showers, mainly before 11pm. Cloudy, with a low around 25. South wind 14 to 16 mph becoming west northwest after midnight. Winds could gust as high as 30 mph.
Sunday
Mostly cloudy, with a high near 31. West northwest wind 10 to 17 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 22. North northwest wind 5 to 9 mph becoming light and variable after midnight.
Monday
A 20 percent chance of snow showers after noon. Mostly cloudy, with a high near 34. East northeast wind 3 to 6 mph.
Monday Night
Snow showers. Low around 24. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 31. North northwest wind 3 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 17. Light and variable wind.
Wednesday
Mostly sunny, with a high near 39. Light south wind becoming south southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 19. Southwest wind around 7 mph becoming north northwest after midnight.
Thursday
Partly sunny, with a high near 29. North northwest wind 5 to 7 mph becoming east northeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 20. Light and variable wind becoming southwest around 6 mph after midnight.
Friday
A slight chance of showers. Partly sunny, with a high near 39. West southwest wind 6 to 8 mph.
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ABOUT THIS FORECAST
Point Forecast:
2 Miles N Saint Johns IL
38.06°N 89.24°W
38.06°N 89.24°W
7:26 am CST Nov 29, 2025
8am CST Nov 29, 2025-6pm CST Dec 5, 2025



