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.

Rain

72°F

22°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.93 in
Dewpoint 72°F (22°C)
Visibility 2.50 mi
Last update 27 Jun 3:55 am CDT
Extended Forecast for

Altamont IL

  • Overnight

    Overnight: Scattered showers. Areas of fog. Otherwise, cloudy, with a low around 69. Light south wind. Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    Showers and
    Areas Fog

  • Saturday

    Saturday: Isolated showers, with thunderstorms also possible after 10am. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 82. Light and variable wind. Chance of precipitation is 20%.

    High: 82 °F

    Isolated
    T-storms and
    Areas Fog

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms, mainly after midnight. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 40%.

    Low: 70 °F

    Scattered
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 90. Heat index values as high as 102. Light south southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 90 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 72. South wind 6 to 8 mph.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. South wind 5 to 9 mph, with gusts as high as 15 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73.

    Low: 73 °F

    Clear

Detailed Forecast

Overnight
Scattered showers. Areas of fog. Otherwise, cloudy, with a low around 69. Light south wind. Chance of precipitation is 30%.
Saturday
Isolated showers, with thunderstorms also possible after 10am. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 82. Light and variable wind. Chance of precipitation is 20%.
Saturday Night
Scattered showers and thunderstorms, mainly after midnight. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 40%.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 90. Heat index values as high as 102. Light south southeast wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Sunday Night
Mostly clear, with a low around 72. South wind 6 to 8 mph.
Monday
Sunny, with a high near 93. South wind 6 to 10 mph, with gusts as high as 16 mph.
Monday Night
Mostly clear, with a low around 73. South wind 5 to 9 mph, with gusts as high as 15 mph.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Clear, with a low around 73.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 73.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Altamont IL
 39.06°N 88.76°W (Elev. 636 ft)
Last Update:
3:21 am CDT Jun 27, 2026
Forecast Valid:
4am CDT Jun 27, 2026-6pm CDT Jul 3, 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