National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

26°F

-3°C

Humidity 78%
Wind Speed N 8 mph
Barometer 30.14 in (1021.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 2 Dec 11:52 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 32. Northwest wind 5 to 7 mph becoming calm.

    High: 32 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Calm wind becoming south around 5 mph after midnight.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. South southwest wind 5 to 10 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 18. Light and variable wind becoming north northwest 6 to 11 mph in the evening. Winds could gust as high as 18 mph.

    Low: 18 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 27. North wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 18 mph.

    High: 27 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 38. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 38 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. South wind around 5 mph becoming light and variable in the evening.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 42. Light and variable wind becoming west 5 to 7 mph in the morning.

    High: 42 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 32. Northwest wind 5 to 7 mph becoming calm.
Tonight
Partly cloudy, with a low around 21. Calm wind becoming south around 5 mph after midnight.
Wednesday
Mostly sunny, with a high near 42. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 18. Light and variable wind becoming north northwest 6 to 11 mph in the evening. Winds could gust as high as 18 mph.
Thursday
Mostly sunny, with a high near 27. North wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 15. Calm wind.
Friday
Mostly sunny, with a high near 38. Calm wind becoming south southwest 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 24. South wind around 5 mph becoming light and variable in the evening.
Saturday
Partly sunny, with a high near 42. Light and variable wind becoming west 5 to 7 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 26. East northeast wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 37. North wind 6 to 9 mph.
Sunday Night
Mostly cloudy, with a low around 20. North wind 5 to 7 mph.
Monday
Mostly sunny, with a high near 38. North northwest wind 5 to 7 mph becoming south southwest in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
Last Update:
10:47 am CST Dec 2, 2025
Forecast Valid:
12pm CST Dec 2, 2025-6pm CST Dec 8, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation