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.

Partly Cloudy

66°F

19°C

Humidity 58%
Wind Speed S 9 mph
Barometer 29.95 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 13 May 12:15 am CDT
Extended Forecast for

5 Miles SE Altamont IL

  • Overnight

    Overnight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy early, then gradual clearing, with a low around 57. Southwest wind around 8 mph becoming northwest. Winds could gust as high as 16 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 70. Northwest wind 8 to 15 mph, with gusts as high as 21 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. North northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 15 mph.

    Low: 44 °F

    Mostly Clear

  • Thursday

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

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 52. Light south southeast wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 17 mph.

    Low: 52 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 79. South wind 14 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64. South wind around 8 mph, with gusts as high as 15 mph.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy early, then gradual clearing, with a low around 57. Southwest wind around 8 mph becoming northwest. Winds could gust as high as 16 mph. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 70. Northwest wind 8 to 15 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 44. North northwest wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 15 mph.
Thursday
Sunny, with a high near 70. Calm wind.
Thursday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 52. Light south southeast wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 17 mph.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 79. South wind 14 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 64. South wind around 8 mph, with gusts as high as 15 mph.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
A chance of showers. Partly cloudy, with a low around 69.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88.
Monday Night
Showers likely. Mostly cloudy, with a low around 68.
Tuesday
Showers likely. Mostly cloudy, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Altamont IL
 39.01°N 88.7°W (Elev. 574 ft)
Last Update:
11:41 pm CDT May 12, 2026
Forecast Valid:
12am CDT May 13, 2026-6pm CDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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