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

64°F

18°C

Humidity 73%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Sep 6:47 am CDT
Extended Forecast for

Gorham IL

  • Today

    Today: Mostly sunny, with a high near 89. South southwest wind 6 to 9 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. South wind 5 to 9 mph.

    Low: 69 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 88. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 88 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 70%.

    Low: 66 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. High near 72. Light north northwest wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 80%.

    High: 72 °F

    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 57. North northeast wind around 10 mph.

    Low: 57 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69. Northeast wind around 8 mph.

    High: 69 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 53. Light northeast wind.

    Low: 53 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Calm wind becoming north 5 to 8 mph in the morning.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 89. South southwest wind 6 to 9 mph.
Tonight
Mostly cloudy, with a low around 69. South wind 5 to 9 mph.
Thursday
Partly sunny, with a high near 88. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 70%.
Friday
Showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. High near 72. Light north northwest wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 80%.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 57. North northeast wind around 10 mph.
Saturday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69. Northeast wind around 8 mph.
Saturday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 53. Light northeast wind.
Sunday
Mostly sunny, with a high near 72. Calm wind becoming north 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 50. North wind 3 to 5 mph.
Monday
Sunny, with a high near 68. North northeast wind 5 to 9 mph.
Monday Night
Clear, with a low around 45. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 69. Calm wind becoming east around 5 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gorham IL
 37.71°N 89.48°W
Last Update:
5:35 am CDT Sep 30, 2026
Forecast Valid:
7am CDT Sep 30, 2026-6pm CDT Oct 6, 2026
 
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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