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

92°F

33°C

Humidity 59%
Wind Speed SE 5 mph
Barometer 30.04 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 18 Aug 4:15 pm CDT
Extended Forecast for

3 Miles W Watson IL

Heat Advisory August 18, 04:37pm until August 18, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory August 18, 04:37pm until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. South southwest wind around 8 mph becoming west northwest in the afternoon.

    High: 92 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, with a high near 84. North northeast wind 3 to 8 mph.

    High: 84 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66. North northeast wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 86. Northeast wind 5 to 7 mph.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 72. Southeast wind around 7 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. South southwest wind around 8 mph becoming west northwest in the afternoon.
Tuesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 84. North northeast wind 3 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 66. North northeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 86. Northeast wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Watson IL
 39.01°N 88.62°W (Elev. 509 ft)
Last Update:
4:25 pm CDT Aug 18, 2025
Forecast Valid:
4pm CDT Aug 18, 2025-6pm CDT Aug 25, 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