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.

Fair

65°F

18°C

Humidity 57%
Wind Speed W 12 G 16 mph
Barometer 29.96 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 13 May 3:35 am CDT
Extended Forecast for

4 Miles SSE Altamont IL

  • Overnight

    Overnight: Mostly clear, with a low around 56. Northwest wind around 8 mph, with gusts as high as 17 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. Northwest wind 8 to 16 mph, with gusts as high as 23 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 44. North northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 44 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 52. Light south southeast wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 16 mph.

    Low: 52 °F

    Increasing
    Clouds

  • 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 77. South southeast wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. South wind around 8 mph, with gusts as high as 15 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 56. Northwest wind around 8 mph, with gusts as high as 17 mph.
Wednesday
Sunny, with a high near 70. Northwest wind 8 to 16 mph, with gusts as high as 23 mph.
Wednesday Night
Clear, with a low around 44. North northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 69. Light and variable wind.
Thursday Night
Increasing clouds, with a low around 52. Light south southeast wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 16 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 77. South southeast wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 63. South wind around 8 mph, with gusts as high as 15 mph.
Saturday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Saturday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 68.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Breezy.
Monday Night
A chance of showers. Mostly cloudy, with a low around 69.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Altamont IL
 39.01°N 88.7°W (Elev. 574 ft)
Last Update:
3:36 am CDT May 13, 2026
Forecast Valid:
3am CDT May 13, 2026-6pm CDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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