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

81°F

27°C

Humidity 58%
Wind Speed W 5 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 19 Jun 7:52 pm CDT
Extended Forecast for

5 Miles NNE Jacob IL

  • Tonight

    Tonight: Clear, with a low around 66. Calm wind.

    Low: 66 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 89. South southwest wind 3 to 8 mph.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. South wind around 8 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94. South southwest wind 6 to 8 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 75. South wind around 7 mph.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind around 6 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South wind around 6 mph becoming calm after midnight.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 66. Calm wind.
Friday
Sunny, with a high near 89. South southwest wind 3 to 8 mph.
Friday Night
Mostly clear, with a low around 74. South wind around 8 mph.
Saturday
Sunny, with a high near 93. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 76. South wind 7 to 10 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 94. South southwest wind 6 to 8 mph.
Sunday Night
Clear, with a low around 75. South wind around 7 mph.
Monday
Sunny, with a high near 93. South wind around 6 mph.
Monday Night
Mostly clear, with a low around 75. South wind around 6 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 75. Light south wind.
Wednesday
Sunny, with a high near 92. Calm wind becoming south southwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 75. South wind 3 to 5 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Jacob IL
 37.82°N 89.51°W
Last Update:
6:16 pm CDT Jun 19, 2025
Forecast Valid:
8pm CDT Jun 19, 2025-6pm CDT Jun 26, 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