Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Overcast
25°F
-4°C
| Humidity | 81% |
| Wind Speed | NE 7 mph |
| Barometer | 30.48 in (1032.4 mb) |
| Dewpoint | 20°F (-7°C) |
| Visibility | 10.00 mi |
| Wind Chill | 17°F (-8°C) |
| Last update | 1 Dec 2:52 am CST |
Extended Forecast for
2 Miles N Saint Johns IL
Overnight

Low: 21 °F
Mostly Cloudy
Monday
High: 34 °F
Mostly Cloudy
then Chance
Snow ShowersMonday Night
Low: 22 °F
Snow Showers
then Chance
Snow ShowersTuesday

High: 33 °F
Mostly Sunny
Tuesday Night

Low: 21 °F
Mostly Clear
Wednesday

High: 41 °F
Mostly Sunny
Wednesday Night

Low: 20 °F
Mostly Cloudy
Thursday

High: 29 °F
Partly Sunny
Thursday Night
Low: 19 °F
Mostly Cloudy
then Chance
Snow Showers
Detailed Forecast
Overnight
Mostly cloudy, with a low around 21. Northeast wind 3 to 5 mph.
Monday
A 40 percent chance of snow showers, mainly after 4pm. Cloudy, with a high near 34. North wind 3 to 7 mph.
Monday Night
Snow showers, mainly before midnight. Low around 22. Calm wind becoming northwest 5 to 8 mph in the evening. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Mostly sunny, with a high near 33. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Tuesday Night
Mostly clear, with a low around 21. Calm wind becoming south around 6 mph after midnight.
Wednesday
Mostly sunny, with a high near 41. South southwest wind 6 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 20. South southwest wind 5 to 10 mph becoming north northwest after midnight.
Thursday
Partly sunny, with a high near 29. North northwest wind 5 to 10 mph becoming light north northeast in the afternoon.
Thursday Night
A chance of snow showers after midnight. Mostly cloudy, with a low around 19. Calm wind.
Friday
A chance of snow showers before noon, then a chance of rain showers. Mostly cloudy, with a high near 37. Calm wind becoming south around 5 mph.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 26. Calm wind becoming southwest around 5 mph after midnight.
Saturday
Partly sunny, with a high near 42. Southwest wind 5 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 28. Light and variable wind becoming west around 6 mph after midnight.
Sunday
Mostly cloudy, with a high near 39. Northwest 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
3:22 am CST Dec 1, 2025
3am CST Dec 1, 2025-6pm CST Dec 7, 2025



