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.

Partly Cloudy

69°F

21°C

Humidity 34%
Wind Speed NW 20 G 25 mph
Barometer 30.01 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 13 May 5:15 pm CDT
Extended Forecast for

Mason IL

  • Tonight

    Tonight: Clear, with a low around 43. North northwest wind 6 to 11 mph becoming light north in the evening. Winds could gust as high as 20 mph.

    Low: 43 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Calm wind.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 4am. Increasing clouds, with a low around 50. Calm wind becoming south southeast 5 to 8 mph after midnight. Winds could gust as high as 15 mph.

    Low: 50 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 76. South wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 9 mph, with gusts as high as 17 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.

    High: 83 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64. South southeast wind around 6 mph.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 43. North northwest wind 6 to 11 mph becoming light north in the evening. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 70. Calm wind.
Thursday Night
A 20 percent chance of showers after 4am. Increasing clouds, with a low around 50. Calm wind becoming south southeast 5 to 8 mph after midnight. Winds could gust as high as 15 mph.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 76. South wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 9 mph, with gusts as high as 17 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Southwest wind 9 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64. South southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 67.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 70.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 63.
Wednesday
A chance of showers. Partly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mason IL
 38.94°N 88.62°W (Elev. 564 ft)
Last Update:
1:51 pm CDT May 13, 2026
Forecast Valid:
5pm CDT May 13, 2026-6pm CDT May 20, 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