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.

Overcast

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 20 Aug 6:53 am CDT
Extended Forecast for

4 Miles NNW Pomona IL

  • Today

    Today: Partly sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Light north wind.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Calm wind becoming north around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. Light southeast wind.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 83. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 67. Calm wind.
Friday
Sunny, with a high near 85. Calm wind.
Friday Night
Mostly clear, with a low around 68. Calm wind.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Calm wind becoming north northwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 65. Light north wind.
Sunday
Sunny, with a high near 82. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 63. Calm wind.
Monday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81. Light southeast wind.
Monday Night
A slight chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 64. Light east southeast wind.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 85. Light south southeast wind.
Tuesday Night
Partly cloudy, with a low around 66. Calm wind.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Light northwest wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Pomona IL
 37.7°N 89.37°W
Last Update:
5:36 am CDT Aug 20, 2026
Forecast Valid:
7am CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
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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