National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Fair

42°F

6°C

Humidity 54%
Wind Speed S 3 mph
Barometer 30.18 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 12 Jan 7:35 pm CST
Extended Forecast for

Saint Elmo IL

  • Tonight

    Tonight: Mostly cloudy during the early evening, then clearing, with a low around 34. South wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 34 °F

    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 57. Southwest wind 9 to 15 mph, with gusts as high as 30 mph.

    High: 57 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 7pm. Mostly cloudy, with a low around 35. West wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature rising to near 39 by 10am, then falling to around 30 during the remainder of the day. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 31 mph.

    High: 39 °F⇓

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 15. North wind 10 to 16 mph, with gusts as high as 25 mph.

    Low: 15 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 28.

    High: 28 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Slight Chance
    Snow

  • Friday

    Friday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17.

    Low: 17 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy during the early evening, then clearing, with a low around 34. South wind 7 to 9 mph, with gusts as high as 21 mph.
Tuesday
Increasing clouds, with a high near 57. Southwest wind 9 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
A 20 percent chance of rain after 7pm. Mostly cloudy, with a low around 35. West wind 8 to 13 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, with a temperature rising to near 39 by 10am, then falling to around 30 during the remainder of the day. Breezy, with a northwest wind 14 to 23 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 15. North wind 10 to 16 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 28.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Friday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 39.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 25.
Saturday Night
Mostly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 21.
Sunday Night
Partly cloudy, with a low around 10.
M.L.King Day
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Elmo IL
 39.02°N 88.85°W (Elev. 600 ft)
Last Update:
4:46 pm CST Jan 12, 2026
Forecast Valid:
7pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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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