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.

Thunderstorm Heavy Rain

71°F

22°C

Humidity 98%
Wind Speed W 12 mph
Barometer 30.04 in
Dewpoint 71°F (22°C)
Visibility 7.00 mi
Last update 17 Jul 6:15 pm CDT
Extended Forecast for

Altamont IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    T-storms
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Northeast wind around 5 mph becoming calm in the morning.

    High: 86 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South southeast wind 3 to 5 mph.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 88. Heat index values as high as 100. Southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Light south southwest wind.

    Low: 73 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light southeast wind.

    Low: 72 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.

    High: 88 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. Northeast wind around 5 mph becoming calm in the morning.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South southeast wind 3 to 5 mph.
Saturday
Showers and thunderstorms likely, mainly before 1pm. Partly sunny, with a high near 88. Heat index values as high as 100. Southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Light south southwest wind.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light southeast wind.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Altamont IL
 39.06°N 88.73°W (Elev. 600 ft)
Last Update:
6:11 pm CDT Jul 17, 2025
Forecast Valid:
6pm CDT Jul 17, 2025-6pm CDT Jul 24, 2025
 
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