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

73°F

23°C

Humidity 89%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 21 Aug 8:52 pm CDT
Extended Forecast for

Pomona IL

  • Tonight

    Tonight: Clear, with a low around 68. Calm wind.

    Low: 68 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Calm wind becoming north northwest 5 to 9 mph in the morning.

    High: 88 °F

    Sunny

  • Saturday Night

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

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

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

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83. Calm wind.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Light east southeast wind.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. Southeast wind 3 to 5 mph.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am. Partly cloudy, with a low around 68. Light east wind.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 68. Calm wind.
Saturday
Sunny, with a high near 88. Calm wind becoming north northwest 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 65. Light northwest wind.
Sunday
Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming north northwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 63. Calm wind.
Monday
Partly sunny, with a high near 83. Calm wind.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Light east southeast wind.
Tuesday
Mostly sunny, with a high near 86. Southeast wind 3 to 5 mph.
Tuesday Night
A slight chance of showers after 1am. Partly cloudy, with a low around 68. Light east wind.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 67. Calm wind.
Thursday
Sunny, with a high near 89. Light north northwest wind.
Thursday Night
Mostly clear, with a low around 68. Calm wind.
Friday
A slight chance of showers. Sunny, with a high near 89. Light north northeast wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pomona IL
 37.64°N 89.35°W
Last Update:
10:36 pm CDT Aug 21, 2026
Forecast Valid:
11pm CDT Aug 21, 2026-6pm CDT Aug 28, 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