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Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fog
54°F
12°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 30.24 in (1024.0 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 0.15 mi |
| Last update | 24 Dec 7:52 am CST |
Extended Forecast for
2 Miles N Saint Johns IL
Dense Fog Advisory December 24, 08:26am until December 24, 09:00am
NOW until 9:00am Wed
Dense Fog Advisory
Today
High: 66 °F
Patchy
Drizzle and
Areas Dense
FogTonight
Low: 58 °F
Mostly Cloudy
Christmas Day
High: 68 °F
Mostly Cloudy
Thursday Night
Low: 59 °F
Mostly Cloudy
Friday
High: 72 °F
Mostly Sunny
Friday Night
Low: 49 °F
Partly Cloudy
Saturday
High: 69 °F
Mostly Cloudy
Saturday Night
Low: 47 °F
Mostly Cloudy
Detailed Forecast
Today
Patchy drizzle before 1pm. Areas of dense fog before 9am. Otherwise, cloudy, with a high near 66. East wind 5 to 8 mph becoming south in the afternoon.
Tonight
Mostly cloudy, with a low around 58. Southwest wind around 7 mph.
Christmas Day
Mostly cloudy, with a high near 68. West southwest wind around 6 mph becoming south southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 59. South southeast wind 6 to 10 mph.
Friday
Mostly sunny, with a high near 72. West wind 6 to 13 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 49. West wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 69. Light southeast wind becoming south 5 to 10 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 47. South wind 9 to 11 mph becoming west northwest after midnight. Winds could gust as high as 20 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 57. Northwest wind 13 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 19. Northwest wind 14 to 16 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 28. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 16. West northwest wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 33. West northwest wind 6 to 10 mph becoming south southwest in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles N Saint Johns IL
38.06°N 89.24°W
38.06°N 89.24°W
7:11 am CST Dec 24, 2025
8am CST Dec 24, 2025-6pm CST Dec 30, 2025
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