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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

22°F

-6°C

Humidity 60%
Wind Speed NW 13 mph
Barometer 30.49 in (1033.0 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 23 Feb 12:52 am CST
Extended Forecast for

Jacob IL

  • Overnight

    Overnight: Partly cloudy, with a low around 15. North northwest wind around 13 mph, with gusts as high as 23 mph.

    Low: 15 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. North northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Calm wind becoming south around 6 mph after midnight.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. Breezy, with a south southwest wind 9 to 14 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 50 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. South southwest wind 10 to 15 mph becoming light southwest after midnight. Winds could gust as high as 23 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57. Light and variable wind becoming south 5 to 7 mph in the morning.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 39. Southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 39 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, mainly before noon. Partly sunny, with a high near 52. Northwest wind 8 to 13 mph, with gusts as high as 18 mph.

    High: 52 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 15. North northwest wind around 13 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 34. North northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 18. Calm wind becoming south around 6 mph after midnight.
Tuesday
Partly sunny, with a high near 50. Breezy, with a south southwest wind 9 to 14 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 32 mph.
Tuesday Night
Mostly cloudy, with a low around 37. South southwest wind 10 to 15 mph becoming light southwest after midnight. Winds could gust as high as 23 mph.
Wednesday
Mostly sunny, with a high near 57. Light and variable wind becoming south 5 to 7 mph in the morning.
Wednesday Night
A chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 39. Southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 60%.
Thursday
A chance of showers, mainly before noon. Partly sunny, with a high near 52. Northwest wind 8 to 13 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 29. Northwest wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 59. Light south southwest wind increasing to 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 38. South wind around 7 mph.
Saturday
Sunny, with a high near 63. South southwest wind 6 to 13 mph, with gusts as high as 18 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 33. South southwest wind 8 to 10 mph becoming north after midnight.
Sunday
A slight chance of showers. Partly sunny, with a high near 51. Northeast wind 8 to 11 mph.
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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:
10:27 pm CST Feb 22, 2026
Forecast Valid:
1am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation