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.

Partly Cloudy

77°F

25°C

Humidity 96%
Wind Speed S 7 mph
Barometer 29.91 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 27 Jun 5:55 pm CDT
Extended Forecast for

Effingham IL

Heat Advisory June 28, 01:00pm until June 28, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Patchy fog between 3am and 4am. Otherwise, mostly cloudy, with a low around 70. South southwest wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 90. Heat index values as high as 103. Calm wind becoming south 5 to 8 mph in the morning.

    High: 90 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 3 to 6 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 92. Heat index values as high as 105. South wind 5 to 9 mph, with gusts as high as 16 mph.

    High: 92 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South southwest wind 3 to 7 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. South wind around 5 mph becoming calm after midnight.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Patchy fog between 3am and 4am. Otherwise, mostly cloudy, with a low around 70. South southwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 90. Heat index values as high as 103. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South wind 3 to 6 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 92. Heat index values as high as 105. South wind 5 to 9 mph, with gusts as high as 16 mph.
Monday Night
Mostly clear, with a low around 73. South wind 5 to 7 mph.
Tuesday
Sunny, with a high near 93. South southwest wind 3 to 7 mph.
Tuesday Night
Clear, with a low around 73. South wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 73.
Friday
Mostly sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 72.
Independence Day
A chance of showers and thunderstorms. Sunny, with a high near 89.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Effingham IL
 39.12°N 88.55°W (Elev. 581 ft)
Last Update:
1:26 pm CDT Jun 27, 2026
Forecast Valid:
6pm CDT Jun 27, 2026-6pm CDT Jul 4, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation