Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Fair

89°F

32°C

Humidity 44%
Wind Speed W 8 mph
Barometer 29.91 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 26 Aug 5:15 pm CDT
Extended Forecast for

Saint Elmo IL

  • This Afternoon

    This Afternoon: Isolated showers and thunderstorms.  Mostly sunny, with a high near 88. West wind around 7 mph.  Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Isolated showers and thunderstorms before 9pm.  Mostly clear, with a low around 64. Northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 64 °F

    Isolated
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming north 5 to 7 mph in the morning.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Light north wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms. Mostly sunny, with a high near 88. West wind around 7 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 9pm. Mostly clear, with a low around 64. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 85. Calm wind becoming north 5 to 7 mph in the morning.
Thursday Night
Mostly clear, with a low around 61. Light north wind.
Friday
Sunny, with a high near 83. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Saint Elmo IL
 39.02°N 88.85°W (Elev. 600 ft)
2:56 pm CDT Aug 26, 2026
5pm CDT Aug 26, 2026-6pm CDT Sep 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database