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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

74°F

23°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 14 Oct 12:52 am CDT
Extended Forecast for

Jacob IL

  • Overnight

    Overnight: Increasing clouds, with a low around 71. South southwest wind around 5 mph.

    Low: 71 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. High near 82. Light and variable wind becoming west southwest around 5 mph. Chance of precipitation is 100%.

    High: 82 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Light and variable wind becoming south southwest 6 to 11 mph in the morning.

    High: 87 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Southwest wind 6 to 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 62. Breezy, with a north northwest wind 17 to 23 mph, with gusts as high as 30 mph.

    High: 62 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. North wind 6 to 15 mph, with gusts as high as 22 mph.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63. Northeast wind 3 to 6 mph.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

Detailed Forecast

Overnight
Increasing clouds, with a low around 71. South southwest wind around 5 mph.
Wednesday
Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. High near 82. Light and variable wind becoming west southwest around 5 mph. Chance of precipitation is 100%.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 66. Calm wind.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 5pm. Mostly cloudy, then gradually becoming sunny, with a high near 87. Light and variable wind becoming south southwest 6 to 11 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Southwest wind 6 to 15 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 62. Breezy, with a north northwest wind 17 to 23 mph, with gusts as high as 30 mph.
Friday Night
Mostly clear, with a low around 40. North wind 6 to 15 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 63. Northeast wind 3 to 6 mph.
Saturday Night
Clear, with a low around 37. Calm wind.
Sunday
Sunny, with a high near 70. Calm wind becoming south 5 to 7 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 44. Calm wind.
Monday
Mostly sunny, with a high near 72. Calm wind becoming south 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 48. Calm wind.
Tuesday
Mostly sunny, with a high near 77. Calm wind becoming south southeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jacob IL
 37.75°N 89.54°W
Last Update:
1:26 am CDT Oct 14, 2026
Forecast Valid:
1am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation