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

87°F

31°C

Humidity 76%
Wind Speed SW 7 mph
Barometer 30.01 in
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 11 Aug 11:30 am CDT
Extended Forecast for

4 Miles SSE Effingham IL

Heat Advisory August 11, 12:00pm until August 11, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Partly sunny, with a high near 93. Heat index values as high as 103. Southwest wind around 11 mph, with gusts as high as 18 mph.

    High: 93 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 73. South southwest wind around 7 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 91. Heat index values as high as 102. West southwest wind 6 to 8 mph becoming south in the afternoon. Winds could gust as high as 15 mph.

    High: 91 °F

    Slight Chance
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%.

    Low: 73 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 88. Northeast wind around 6 mph.

    High: 88 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Calm wind becoming northeast around 6 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 86. East wind around 6 mph.

    High: 86 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 93. Heat index values as high as 103. Southwest wind around 11 mph, with gusts as high as 18 mph.
Tonight
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 73. South southwest wind around 7 mph. Chance of precipitation is 20%.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly sunny, with a high near 91. Heat index values as high as 102. West southwest wind 6 to 8 mph becoming south in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%.
Thursday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 88. Northeast wind around 6 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Calm wind becoming northeast around 6 mph after midnight. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Partly sunny, with a high near 86. East wind around 6 mph.
Friday Night
Partly cloudy, with a low around 70.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 91.
Sunday Night
A chance of showers. Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Effingham IL
 39.07°N 88.53°W (Elev. 554 ft)
Last Update:
10:36 am CDT Aug 11, 2026
Forecast Valid:
11am CDT Aug 11, 2026-6pm CDT Aug 17, 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