Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Partly Cloudy
13°F
-11°C
| Humidity | 74% |
| Wind Speed | N 12 mph |
| Barometer | 30.17 in (1022.6 mb) |
| Dewpoint | 6°F (-14°C) |
| Visibility | 10.00 mi |
| Wind Chill | -1°F (-18°C) |
| Last update | 25 Jan 5:52 pm CST |
Extended Forecast for
2 Miles NNE Saint Johns IL
Cold Weather Advisory January 25, 06:14pm until January 26, 12:00am
Extreme Cold Warning January 26, 12:00am until January 27, 10:00am
NOW until 12:00am Mon
Cold Weather Advisory
Tonight
Low: -7 °F
Gradual
ClearingMonday
High: 14 °F
Sunny
Monday Night
Low: 5 °F
Mostly Clear
Tuesday
High: 28 °F
Sunny
Tuesday Night
Low: -4 °F
Partly Cloudy
Wednesday
High: 25 °F
Mostly Sunny
Wednesday Night
Low: 0 °F
Partly Cloudy
Thursday
High: 19 °F
Partly Sunny
Detailed Forecast
Tonight
Cloudy during the early evening, then gradual clearing, with a low around -7. Wind chill values as low as -20. Northwest wind 8 to 14 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 14. Wind chill values as low as -23. Northwest wind 5 to 9 mph becoming west southwest in the afternoon.
Monday Night
Mostly clear, with a steady temperature around 5. Wind chill values as low as -12. Light south southwest wind increasing to 8 to 13 mph in the evening. Winds could gust as high as 21 mph.
Tuesday
Sunny, with a high near 28. Wind chill values as low as -7. Southwest wind 7 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around -4. Northwest wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 25. Calm wind becoming west southwest 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 0. West southwest wind around 5 mph becoming north northwest after midnight.
Thursday
Partly sunny, with a high near 19. Northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 2. Calm wind becoming north around 5 mph after midnight.
Friday
Partly sunny, with a high near 18. North wind 5 to 7 mph.
Friday Night
Partly cloudy, with a low around -2. North northwest wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 19. Northwest wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 2. Light and variable wind becoming south southwest around 5 mph after midnight.
Sunday
Partly sunny, with a high near 26. South southwest wind 5 to 8 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles NNE Saint Johns IL
38.06°N 89.21°W
38.06°N 89.21°W
3:16 pm CST Jan 25, 2026
6pm CST Jan 25, 2026-6pm CST Feb 1, 2026
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