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.

Mostly Cloudy

29°C

84°F

Humidity 74%
Wind Speed S 9 km/h
Barometer 30.02 in
Dewpoint 24°C (75°F)
Visibility 16 km
Heat Index33°C (92°F)
Last update 14 Jul 3:55 pm CDT
Extended Forecast for

4 Miles SE Pinckneyville IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 31. South wind around 8 km/h.

    High: 31 °C

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 22. South southeast wind 5 to 10 km/h becoming calm in the evening. Chance of precipitation is 30%.

    Low: 22 °C

    Chance
    T-storms and
    Patchy Fog

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 32. Light south southeast wind becoming south southwest 8 to 13 km/h in the morning. Chance of precipitation is 60%.

    High: 32 °C

    Slight Chance
    T-storms and
    Patchy Fog
    then T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 22. South wind 3 to 8 km/h. Chance of precipitation is 60%.

    Low: 22 °C

    T-storms
    Likely then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 33. South southwest wind 5 to 11 km/h.

    High: 33 °C

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 24. South southwest wind 5 to 10 km/h.

    Low: 24 °C

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 34. Southwest wind 8 to 13 km/h.

    High: 34 °C

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 22. South southwest wind 5 to 10 km/h becoming calm after midnight.

    Low: 22 °C

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 32. South wind 5 to 8 km/h becoming west in the afternoon.

    High: 32 °C

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 31. South wind around 8 km/h.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers and thunderstorms after 4am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 22. South southeast wind 5 to 10 km/h becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
Showers and thunderstorms likely, mainly after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 32. Light south southeast wind becoming south southwest 8 to 13 km/h in the morning. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 22. South wind 3 to 8 km/h. Chance of precipitation is 60%.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 33. South southwest wind 5 to 11 km/h.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 24. South southwest wind 5 to 10 km/h.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 34. Southwest wind 8 to 13 km/h.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 22. South southwest wind 5 to 10 km/h becoming calm after midnight.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 32. South wind 5 to 8 km/h becoming west in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Calm wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 33. South southwest wind 5 to 11 km/h.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 24. South wind 5 to 10 km/h.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 34. Southwest wind 5 to 10 km/h.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SE Pinckneyville IL
 38.04°N 89.33°W
Last Update:
4:31 pm CDT Jul 14, 2025
Forecast Valid:
4pm CDT Jul 14, 2025-6pm CDT Jul 20, 2025
 
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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