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.

Fog/Mist

72°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 72°F (22°C)
Visibility 1.00 mi
Last update 28 Jun 1:55 am CDT
Extended Forecast for

3 Miles SE Watson IL

Heat Advisory June 28, 01:00pm until June 28, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Areas of fog. Otherwise, mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms and
    Areas Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 8am. Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 90. Heat index values as high as 102. Calm wind becoming south around 6 mph in the morning.

    High: 90 °F

    Slight Chance
    T-storms and
    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South southeast wind 3 to 5 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 93. Heat index values as high as 109. Light south southwest wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 16 mph.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. South southwest wind 3 to 8 mph. Winds could gust as high as 15 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. South southwest wind 3 to 8 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. South wind around 6 mph becoming calm after midnight.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Areas of fog. Otherwise, mostly cloudy, with a low around 70. Calm wind.
Sunday
A 20 percent chance of showers and thunderstorms before 8am. Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 90. Heat index values as high as 102. Calm wind becoming south around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South southeast wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 93. Heat index values as high as 109. Light south southwest wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 16 mph.
Monday Night
Mostly clear, with a low around 73. South southwest wind 3 to 8 mph. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 94. South southwest wind 3 to 8 mph.
Tuesday Night
Clear, with a low around 73. South wind around 6 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny, with a high near 92.
Friday Night
Partly cloudy, with a low around 73.
Independence Day
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Watson IL
 38.99°N 88.53°W (Elev. 492 ft)
Last Update:
1:26 am CDT Jun 28, 2026
Forecast Valid:
2am CDT Jun 28, 2026-6pm CDT Jul 4, 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