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

89°F

32°C

Humidity 61%
Wind Speed S 6 mph
Barometer 30.07 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 17 Aug 1:55 pm CDT
Extended Forecast for

5 Miles ESE Mason IL

Heat Advisory August 17, 02:01pm until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 02:01pm until August 17, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms between 8pm and 10pm. Mostly cloudy, with a low around 72. Light and variable wind becoming south around 5 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Heat index values as high as 103. East southeast wind around 5 mph becoming calm in the afternoon.

    High: 92 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 90. Calm wind becoming west southwest around 5 mph. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. North northeast wind 3 to 8 mph.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Partly sunny, with a high near 90. South wind 3 to 5 mph.
Tonight
A slight chance of showers and thunderstorms between 8pm and 10pm. Mostly cloudy, with a low around 72. Light and variable wind becoming south around 5 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Heat index values as high as 103. East southeast wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 72. Calm wind.
Tuesday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 90. Calm wind becoming west southwest around 5 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 85. North northeast wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Mason IL
 38.94°N 88.54°W (Elev. 499 ft)
Last Update:
1:55 pm CDT Aug 17, 2025
Forecast Valid:
2pm CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
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