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

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

0°C

32°F

Humidity 85%
Wind Speed NW 11 km/h
Barometer 1025.3 mb (30.28 in)
Dewpoint -2°C (28°F)
Visibility 16 km
Wind Chill-4°C (25°F)
Last update 11 Feb 6:52 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Today

    Today: Sunny, with a high near 9. North northwest wind 5 to 11 km/h.

    High: 9 °C

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around -2. North northwest wind 5 to 8 km/h becoming calm.

    Low: -2 °C

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 10. Calm wind becoming southeast 5 to 8 km/h in the morning.

    High: 10 °C

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -1. Calm wind.

    Low: -1 °C

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 13. South southeast wind 3 to 8 km/h.

    High: 13 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 2. Calm wind.

    Low: 2 °C

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 11. East southeast wind 5 to 11 km/h.

    High: 11 °C

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 6. East wind around 11 km/h.

    Low: 6 °C

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before noon. Mostly sunny, with a high near 12. North wind 10 to 14 km/h.

    High: 12 °C

    Chance
    Showers then
    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 9. North northwest wind 5 to 11 km/h.
Tonight
Increasing clouds, with a low around -2. North northwest wind 5 to 8 km/h becoming calm.
Thursday
Mostly cloudy, with a high near 10. Calm wind becoming southeast 5 to 8 km/h in the morning.
Thursday Night
Mostly cloudy, with a low around -1. Calm wind.
Friday
Mostly sunny, with a high near 13. South southeast wind 3 to 8 km/h.
Friday Night
Mostly cloudy, with a low around 2. Calm wind.
Saturday
A 40 percent chance of showers, mainly after noon. Mostly cloudy, with a high near 11. East southeast wind 5 to 11 km/h.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 6. East wind around 11 km/h.
Sunday
A chance of showers before noon. Mostly sunny, with a high near 12. North wind 10 to 14 km/h.
Sunday Night
Partly cloudy, with a low around 3. North wind 5 to 8 km/h becoming calm after midnight.
Washington's Birthday
Mostly sunny, with a high near 14. South southeast wind 5 to 13 km/h.
Monday Night
Mostly cloudy, with a low around 7. South wind 11 to 14 km/h.
Tuesday
Mostly cloudy, with a high near 17. South wind 14 to 24 km/h, with gusts as high as 39 km/h.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
Last Update:
7:16 am CST Feb 11, 2026
Forecast Valid:
7am CST Feb 11, 2026-6pm CST Feb 17, 2026
 
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Additional Resources

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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