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

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Mostly Cloudy

75°F

24°C

Humidity 99%
Wind Speed SE 3 mph
Barometer 30.09 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 15 Aug 6:35 am CDT
Extended Forecast for

Stewardson IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 11am. Partly sunny, with a high near 90. Heat index values as high as 103. South southeast wind 6 to 8 mph becoming north northwest in the morning.

    High: 90 °F

    Chance
    T-storms then
    Mostly Sunny

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. South southwest wind 3 to 6 mph.

    Low: 74 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Mostly sunny, with a high near 90. Heat index values as high as 103. West northwest wind 7 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69. North northwest wind 3 to 7 mph.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. North wind 5 to 7 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 11am. Partly sunny, with a high near 90. Heat index values as high as 103. South southeast wind 6 to 8 mph becoming north northwest in the morning.
Tonight
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. South southwest wind 3 to 6 mph.
Sunday
A slight chance of showers and thunderstorms before 7am, then a slight chance of showers between 7am and 8am. Mostly sunny, with a high near 90. Heat index values as high as 103. West northwest wind 7 to 9 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 69. North northwest wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 84. North wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 63. Light and variable wind.
Tuesday
Sunny, with a high near 85. Light and variable wind.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68.
Wednesday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Stewardson IL
 39.26°N 88.63°W (Elev. 640 ft)
Last Update:
6:36 am CDT Aug 15, 2026
Forecast Valid:
6am CDT Aug 15, 2026-6pm CDT Aug 21, 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