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

75°F

24°C

Humidity 100%
Wind Speed E 8 mph
Barometer 30.07 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 15 Aug 2:15 am CDT
Extended Forecast for

Jewett IL

  • Overnight

    Overnight: A slight chance of showers and thunderstorms between 4am and 5am. Partly cloudy, with a low around 73. East southeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Partly sunny, with a high near 90. Heat index values as high as 103. South southeast wind 5 to 7 mph becoming north northwest in the morning. Chance of precipitation is 30%.

    High: 90 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

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

    Low: 74 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 90. Heat index values as high as 103. West northwest wind 6 to 8 mph.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 70. North northwest wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • 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 64. Light and variable wind.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

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

    Low: 68 °F

    Mostly Clear
    then Chance
    T-storms

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms between 4am and 5am. Partly cloudy, with a low around 73. East southeast wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and noon. Partly sunny, with a high near 90. Heat index values as high as 103. South southeast wind 5 to 7 mph becoming north northwest in the morning. Chance of precipitation is 30%.
Saturday Night
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 74. South southwest wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 90. Heat index values as high as 103. West northwest wind 6 to 8 mph.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 70. North northwest wind 3 to 7 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 84. North wind 5 to 7 mph.
Monday Night
Partly cloudy, with a low around 64. Light and variable wind.
Tuesday
Sunny, with a high near 85.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, 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 65.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Jewett IL
 39.22°N 88.23°W (Elev. 551 ft)
Last Update:
1:46 am CDT Aug 15, 2026
Forecast Valid:
2am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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