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Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
2 Miles N Saint Johns IL
Dense Fog Advisory November 21, 05:18am until November 21, 09:00am
NOW until 9:00am Fri
Dense Fog Advisory
Overnight
Low: 52 °F
Showers and
Areas Dense
FogFriday
High: 60 °F
Showers and
Areas Dense
Fog then
Showers
LikelyFriday Night
Low: 46 °F
Chance
Showers then
Mostly CloudySaturday
High: 58 °F
Decreasing
CloudsSaturday Night
Low: 37 °F
Mostly Clear
Sunday
High: 63 °F
Sunny
Sunday Night
Low: 42 °F
Partly Cloudy
Monday
High: 60 °F
Showers
Likely
Detailed Forecast
Overnight
Showers. Areas of dense fog. Low around 52. Calm wind. Chance of precipitation is 100%.
Friday
Showers before 2pm, then a chance of showers and thunderstorms after 5pm. Areas of dense fog before noon. High near 60. East wind 3 to 8 mph. Chance of precipitation is 100%.
Friday Night
A 50 percent chance of showers, mainly before 9pm. Mostly cloudy, with a low around 46. North northeast wind around 6 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 58. North wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 37. Calm wind.
Sunday
Sunny, with a high near 63. Calm wind becoming west southwest around 5 mph.
Sunday Night
Partly cloudy, with a low around 42. Calm wind.
Monday
Showers likely, mainly after noon. Cloudy, with a high near 60. Light south southeast wind increasing to 5 to 10 mph in the morning.
Monday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Mostly cloudy, with a low around 52. South wind 7 to 10 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 65. South southwest wind 7 to 10 mph becoming west northwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 38. Northwest wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 51. West northwest wind 8 to 14 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 27. West wind around 7 mph.
Thanksgiving Day
Mostly sunny, with a high near 46. West wind 5 to 10 mph.
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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
5:06 am CST Nov 21, 2025
5am CST Nov 21, 2025-6pm CST Nov 27, 2025
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