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

25°F

-4°C

Humidity 83%
Wind Speed S 5 mph
Barometer 30.42 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 12 Jan 2:15 am CST
Extended Forecast for

Mason IL

  • Overnight

    Overnight: Clear, with a low around 24. South southwest wind around 8 mph, with gusts as high as 16 mph.

    Low: 24 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 47. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    High: 47 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33. South southwest wind 5 to 8 mph, with gusts as high as 15 mph.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. West wind around 9 mph, with gusts as high as 17 mph.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 41. Northwest wind 10 to 18 mph, with gusts as high as 31 mph.

    High: 41 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 17. North northwest wind 14 to 17 mph, with gusts as high as 30 mph.

    Low: 17 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 24. South southwest wind around 8 mph, with gusts as high as 16 mph.
Monday
Sunny, with a high near 47. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 33. South southwest wind 5 to 8 mph, with gusts as high as 15 mph.
Tuesday
Partly sunny, with a high near 56. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 38. West wind around 9 mph, with gusts as high as 17 mph.
Wednesday
Mostly cloudy, with a high near 41. Northwest wind 10 to 18 mph, with gusts as high as 31 mph.
Wednesday Night
Mostly cloudy, with a low around 17. North northwest wind 14 to 17 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 39.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly cloudy, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 13.
Sunday
Mostly sunny, with a high near 28.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mason IL
 38.94°N 88.62°W (Elev. 564 ft)
Last Update:
10:57 pm CST Jan 11, 2026
Forecast Valid:
2am CST Jan 12, 2026-6pm CST Jan 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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