National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Fair

67°F

19°C

Humidity 99%
Wind Speed N 5 mph
Barometer 29.93 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 3 Aug 1:40 am CDT
Extended Forecast for

3 Miles NNW Mason IL

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly clear, with a low around 62. North wind 3 to 5 mph.

    Low: 62 °F

    Patchy Fog

  • Monday

    Monday: Patchy fog before 10am. Otherwise, sunny, with a high near 83. Light east northeast wind.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. Light southeast wind.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Light south wind.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear
    then 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 40%.

    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 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly clear, with a low around 62. North wind 3 to 5 mph.
Monday
Patchy fog before 10am. Otherwise, sunny, with a high near 83. Light east northeast wind.
Monday Night
Mostly clear, with a low around 62. Calm wind.
Tuesday
Sunny, with a high near 84. Light southeast wind.
Tuesday Night
Mostly clear, with a low around 62. Calm wind.
Wednesday
Sunny, with a high near 86. Light south wind.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Calm wind.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84.
Friday Night
A chance of showers. Mostly cloudy, with a low around 67.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Mason IL
 38.99°N 88.65°W (Elev. 499 ft)
Last Update:
1:26 am CDT Aug 3, 2026
Forecast Valid:
2am CDT Aug 3, 2026-6pm CDT Aug 9, 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