Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
48°F
9°C
| Humidity | 44% |
| Wind Speed | S 13 mph |
| Barometer | 30.10 in (1019.6 mb) |
| Dewpoint | 27°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 43°F (6°C) |
| Last update | 12 Mar 7:52 pm CDT |
Extended Forecast for
3 Miles NW Saint Johns IL
Tonight
Low: 43 °F
Partly Cloudy
then Partly
Cloudy and
BreezyFriday
High: 62 °F
Mostly Sunny
Friday Night
Low: 36 °F
Partly Cloudy
Saturday
High: 66 °F
Partly Sunny
Saturday Night
Low: 54 °F
Partly Cloudy
Sunday
High: 70 °F
Breezy.
Slight Chance
Showers then
ShowersSunday Night
Low: 24 °F
Rain/Snow and
BreezyMonday
High: 32 °F
Partly Sunny
and BreezyMonday Night
Low: 14 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 43. Breezy, with a south wind 10 to 20 mph, with gusts as high as 34 mph.
Friday
Mostly sunny, with a high near 62. West wind 11 to 16 mph, with gusts as high as 31 mph.
Friday Night
Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming light and variable.
Saturday
Partly sunny, with a high near 66. East wind 6 to 10 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 54. Southeast wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday
A slight chance of showers, then showers and possibly a thunderstorm after 1pm. High near 70. Breezy, with a south wind 15 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.
Sunday Night
Rain and snow showers, mainly before 1am. Some thunder is also possible. Low around 24. Breezy, with a southwest wind around 25 mph becoming west northwest after midnight. Winds could gust as high as 36 mph. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 32. Breezy, with a west northwest wind 21 to 24 mph, with gusts as high as 33 mph.
Monday Night
Mostly clear, with a low around 14. Northwest wind 8 to 16 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 36. West wind around 8 mph.
Tuesday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 27. South southeast wind 7 to 9 mph.
Wednesday
Partly sunny, with a high near 55. South wind 9 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 38. South southwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 66. South southwest wind 6 to 9 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NW Saint Johns IL
38.06°N 89.27°W
38.06°N 89.27°W
5:51 pm CDT Mar 12, 2026
8pm CDT Mar 12, 2026-6pm CDT Mar 19, 2026
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