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

43°F

6°C

Humidity 93%
Wind Speed W 8 mph
Barometer 29.88 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 12 Nov 12:55 am CST
Extended Forecast for

Mason IL

  • Overnight

    Overnight: Partly cloudy, with a low around 40. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain between 11am and 5pm. Increasing clouds, with a high near 50. North northwest wind 7 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31. North northwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 45. North northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 45 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. Northwest wind 3 to 6 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 47. North northwest wind around 5 mph becoming calm in the afternoon.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Calm wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 40. Northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Thursday
A slight chance of rain between 11am and 5pm. Increasing clouds, with a high near 50. North northwest wind 7 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 31. North northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Friday
Partly sunny, with a high near 45. North northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 25. Northwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 47. North northwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
Mostly clear, with a low around 24. Calm wind.
Sunday
Sunny, with a high near 50.
Sunday Night
Mostly clear, with a low around 27.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 26.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Clear, with a low around 27.
Wednesday
Sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mason IL
 38.94°N 88.62°W (Elev. 564 ft)
Last Update:
12:26 am CST Nov 12, 2026
Forecast Valid:
1am CST Nov 12, 2026-6pm CST Nov 18, 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