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

Hazardous Weather Conditions

Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Fair

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 1:35 am CDT
Extended Forecast for

Saint Elmo IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Light southeast wind.

    Low: 65 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82. West wind 3 to 5 mph.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Calm wind becoming east around 5 mph after midnight.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 4pm, then showers and thunderstorms likely after 4pm. High near 80. East wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

    High: 80 °F

    Chance
    T-storms then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 64. Southwest wind 9 to 14 mph becoming northwest after midnight. Chance of precipitation is 90%.

    Low: 64 °F

    Showers

  • Monday

    Monday: A 20 percent chance of showers. Partly sunny, with a high near 76.

    High: 76 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Light southeast wind.
Saturday
Mostly sunny, with a high near 82. West wind 3 to 5 mph.
Saturday Night
Partly cloudy, with a low around 64. Calm wind becoming east around 5 mph after midnight.
Sunday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm between 2pm and 4pm, then showers and thunderstorms likely after 4pm. High near 80. East wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 64. Southwest wind 9 to 14 mph becoming northwest after midnight. Chance of precipitation is 90%.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 80.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 61.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Elmo IL
 39.02°N 88.87°W (Elev. 604 ft)
Last Update:
1:26 am CDT Jun 20, 2026
Forecast Valid:
1am CDT Jun 20, 2026-6pm CDT Jun 26, 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