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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Thunderstorm in Vicinity

66°F

19°C

Humidity 68%
Wind Speed SE 9 mph
Barometer 29.84 in (1010.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 Apr 3:52 am CDT
Extended Forecast for

6 Miles NNE Gorham IL

Severe T-storm Watch until April 27, 10:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until April 27, 10:00am

    NOW until 10:00am Mon

    Severe T-storm Watch

  • Overnight

    Low: 62 °F

    Showers
    Likely

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 83. Breezy, with a south southeast wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 60%.

    High: 83 °F

    Heavy Rain
    then Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Low around 57. South southwest wind 13 to 18 mph becoming west northwest 6 to 11 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 80%.

    Low: 57 °F

    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 76. Northwest wind around 5 mph becoming light and variable in the morning.

    High: 76 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Low around 54. East wind 6 to 8 mph becoming north after midnight. Chance of precipitation is 90%.

    Low: 54 °F

    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. North northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 67. North wind 3 to 6 mph.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 62. Southeast wind around 9 mph. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely, mainly before 4pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 83. Breezy, with a south southeast wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Low around 57. South southwest wind 13 to 18 mph becoming west northwest 6 to 11 mph after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 80%.
Tuesday
A 50 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 76. Northwest wind around 5 mph becoming light and variable in the morning.
Tuesday Night
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Low around 54. East wind 6 to 8 mph becoming north after midnight. Chance of precipitation is 90%.
Wednesday
Mostly sunny, with a high near 66. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 44. North northwest wind 5 to 10 mph becoming light north after midnight.
Thursday
Mostly sunny, with a high near 67. North wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 47. Calm wind.
Friday
Partly sunny, with a high near 64. North wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 41. North wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 65. Calm wind becoming north 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 42. Light and variable wind.
Sunday
Sunny, with a high near 71. West wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNE Gorham IL
 37.8°N 89.45°W
Last Update:
1:51 am CDT Apr 27, 2026
Forecast Valid:
4am CDT Apr 27, 2026-6pm CDT May 3, 2026
 
Forecast Discussion
 
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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