Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

25°F

-4°C

Humidity 48%
Wind Speed N 8 mph
Barometer 30.11 in (1020.2 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 15 Jan 10:52 am CST
Extended Forecast for

2 Miles N Saint Johns IL

  • Today

    Today: Sunny, with a high near 33. Northwest wind 5 to 8 mph becoming south southwest in the afternoon.

    High: 33 °F

    Sunny

  • Tonight

    Tonight: A 40 percent chance of snow showers, mainly before 1am.  Mostly cloudy, with a temperature falling to near 27 by 11pm, then rising to around 33 during the remainder of the night. Light south wind becoming southwest 8 to 13 mph in the evening. Winds could gust as high as 22 mph.

    Low: 27 °F

    Chance Snow
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 45. West wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 45 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of snow showers, mainly after midnight.  Mostly cloudy, with a low around 23. West wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 23 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 28. West northwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 28 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 11. Northwest wind 6 to 9 mph.

    Low: 11 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 27. West northwest wind 7 to 10 mph becoming southwest in the afternoon.

    High: 27 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 16. South southwest wind 7 to 10 mph becoming west northwest after midnight. Winds could gust as high as 18 mph.

    Low: 16 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 26. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 26 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 33. Northwest wind 5 to 8 mph becoming south southwest in the afternoon.
Tonight
A 40 percent chance of snow showers, mainly before 1am. Mostly cloudy, with a temperature falling to near 27 by 11pm, then rising to around 33 during the remainder of the night. Light south wind becoming southwest 8 to 13 mph in the evening. Winds could gust as high as 22 mph.
Friday
Mostly cloudy, with a high near 45. West wind 9 to 14 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of snow showers, mainly after midnight. Mostly cloudy, with a low around 23. West wind 8 to 11 mph, with gusts as high as 18 mph.
Saturday
Partly sunny, with a high near 28. West northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 11. Northwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 27. West northwest wind 7 to 10 mph becoming southwest in the afternoon.
Sunday Night
Mostly clear, with a low around 16. South southwest wind 7 to 10 mph becoming west northwest after midnight. Winds could gust as high as 18 mph.
M.L.King Day
Mostly sunny, with a high near 26. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 11. Northwest wind 3 to 7 mph.
Tuesday
Sunny, with a high near 30. West wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 19. South wind 8 to 10 mph.
Wednesday
Mostly sunny, with a high near 43. Southwest wind 8 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
6:41 am CST Jan 15, 2026
11am CST Jan 15, 2026-6pm CST Jan 21, 2026
 
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Additional Resources

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Hourly Weather Forecast

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