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

77°F

25°C

Humidity 78%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 2 Sep 12:15 am CDT
Extended Forecast for

Effingham IL

Heat Advisory September 2, 12:33am until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 12:33am until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • Overnight

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98. Heat index values as high as 102. Southwest wind 5 to 8 mph, with gusts as high as 16 mph.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southwest wind 3 to 5 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 102. Southwest wind 3 to 7 mph.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. Calm wind.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 1pm. Sunny and hot, with a high near 96.

    High: 96 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 75. South wind 3 to 5 mph.
Wednesday
Sunny and hot, with a high near 98. Heat index values as high as 102. Southwest wind 5 to 8 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 76. South southwest wind 3 to 5 mph.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 102. Southwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 76. Calm wind.
Friday
Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph.
Friday Night
Mostly clear, with a low around 73. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms before 1pm. Sunny and hot, with a high near 96.
Saturday Night
Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 67.
Labor Day
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Effingham IL
 39.12°N 88.55°W (Elev. 581 ft)
Last Update:
12:16 am CDT Sep 2, 2026
Forecast Valid:
12am CDT Sep 2, 2026-6pm CDT Sep 8, 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