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

29°F

-2°C

Humidity 92%
Wind Speed Calm
Barometer 30.24 in (1024.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 13 Feb 5:52 am CST
Extended Forecast for

3 Miles NE Jacob IL

  • Today

    Today: Sunny, with a high near 57. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 36. South wind around 6 mph becoming calm after midnight.

    Low: 36 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain, mainly after noon. High near 53. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 80%.

    High: 53 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: Rain. Low around 45. East wind around 7 mph. Chance of precipitation is 100%.

    Low: 45 °F

    Rain

  • Sunday

    Sunday: A 50 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph.

    High: 55 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. North wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. South wind 3 to 5 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 65 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 57. Light and variable wind becoming south 5 to 10 mph in the morning.
Tonight
Increasing clouds, with a low around 36. South wind around 6 mph becoming calm after midnight.
Saturday
Rain, mainly after noon. High near 53. Calm wind becoming east 5 to 7 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
Rain. Low around 45. East wind around 7 mph. Chance of precipitation is 100%.
Sunday
A 50 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 38. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 61. Calm wind becoming south southeast around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 43. South wind 3 to 5 mph.
Tuesday
Mostly cloudy, with a high near 65. South wind 6 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 55. South southwest wind 13 to 15 mph, with gusts as high as 23 mph.
Wednesday
Partly sunny, with a high near 72. Southwest wind 13 to 16 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly cloudy, with a low around 50. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 67. South southwest wind 8 to 13 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Jacob IL
 37.78°N 89.51°W
Last Update:
4:42 am CST Feb 13, 2026
Forecast Valid:
6am CST Feb 13, 2026-6pm CST Feb 19, 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