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 Index | 82°F (28°C) |
| Last update | 31 Mar 2:52 pm CDT |
Extended Forecast for
2 Miles N Saint Johns IL
This Afternoon

High: 82 °F
Partly Sunny
Tonight

Low: 63 °F
Chance
ShowersWednesday

High: 81 °F
Showers
LikelyWednesday Night
Low: 66 °F
Chance
Showers then
Mostly CloudyThursday
High: 79 °F
Breezy.
Slight Chance
Showers then
Showers
LikelyThursday Night

Low: 63 °F
Showers and
BreezyFriday

High: 81 °F
Showers
LikelyFriday Night
Low: 58 °F
Chance
T-storms then
Showers
LikelySaturday

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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ABOUT THIS FORECAST
Point Forecast:
2 Miles N Saint Johns IL
38.06°N 89.24°W
38.06°N 89.24°W
2:01 pm CDT Mar 31, 2026
3pm CDT Mar 31, 2026-6pm CDT Apr 6, 2026



