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

69°F

21°C

Humidity 32%
Wind Speed Vrbl 5 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 14 May 12:52 pm CDT
Extended Forecast for

Oraville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. Calm wind.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 54. South southeast wind 5 to 7 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 66. South wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 11 to 13 mph, with gusts as high as 21 mph.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. South wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 8 to 15 mph, with gusts as high as 22 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69. South wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Breezy, with a south wind 11 to 20 mph, with gusts as high as 28 mph.

    High: 88 °F

    Sunny then
    Chance
    T-storms and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 76. Calm wind.
Tonight
Partly cloudy, with a low around 54. South southeast wind 5 to 7 mph.
Friday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South wind 9 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Friday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 66. South wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 11 to 13 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 66. South wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 90. South wind 8 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 69. South wind 10 to 13 mph, with gusts as high as 22 mph.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Breezy, with a south wind 11 to 20 mph, with gusts as high as 28 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind 11 to 15 mph, with gusts as high as 23 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 83. South southwest wind 11 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. South wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. South wind 6 to 8 mph becoming west northwest in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oraville IL
 37.91°N 89.42°W
Last Update:
11:36 am CDT May 14, 2026
Forecast Valid:
1pm CDT May 14, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
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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