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

79°F

26°C

Humidity 96%
Wind Speed SE 6 mph
Barometer 30.02 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 9 Aug 10:35 pm CDT
Extended Forecast for

Shelbyville IL

Heat Advisory August 10, 12:00pm until August 10, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 73 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 91. Heat index values as high as 103. Southwest wind 7 to 9 mph, with gusts as high as 16 mph.

    High: 91 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. South southwest wind 5 to 8 mph.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. Heat index values as high as 102. Southwest wind 7 to 9 mph becoming east southeast in the morning. Winds could gust as high as 15 mph.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Partly cloudy, with a low around 72. South southwest wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers before 1pm. Partly sunny, with a high near 89. West southwest wind 6 to 8 mph, with gusts as high as 15 mph.

    High: 89 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind 8 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 91. Heat index values as high as 103. Southwest wind 7 to 9 mph, with gusts as high as 16 mph.
Monday Night
Partly cloudy, with a low around 74. South southwest wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 91. Heat index values as high as 102. Southwest wind 7 to 9 mph becoming east southeast in the morning. Winds could gust as high as 15 mph.
Tuesday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Partly cloudy, with a low around 72. South southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 89. West southwest wind 6 to 8 mph, with gusts as high as 15 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 50%.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 81.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Saturday
A chance of showers. Partly sunny, with a high near 83.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 67.
Sunday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Shelbyville IL
 39.39°N 88.79°W (Elev. 551 ft)
Last Update:
10:21 pm CDT Aug 9, 2026
Forecast Valid:
10pm CDT Aug 9, 2026-6pm CDT Aug 16, 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