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

63°F

17°C

Humidity 100%
Wind Speed S 3 mph
Barometer 29.91 in
Dewpoint 63°F (17°C)
Visibility 7.00 mi
Last update 10 Mar 7:55 am CDT
Extended Forecast for

Altamont IL

  • Today

    Today: Partly sunny, with a high near 76. South southwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 76 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 59. South southwest wind 16 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then showers likely. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 18 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 67 °F⇓

    Breezy.
    T-storms then
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Blustery, with a north northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 29 mph.

    Low: 31 °F

    Chance
    Showers and
    Blustery then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 51. North northwest wind 5 to 8 mph becoming west southwest in the afternoon.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. Breezy, with a south wind 7 to 12 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 32 mph.

    Low: 41 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 59. Breezy, with a southwest wind 13 to 21 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 59 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 76. South southwest wind 10 to 16 mph, with gusts as high as 26 mph.
Tonight
Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 59. South southwest wind 16 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm before 1pm, then showers likely. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 18 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. Blustery, with a north northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 29 mph.
Thursday
Sunny, with a high near 51. North northwest wind 5 to 8 mph becoming west southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 41. Breezy, with a south wind 7 to 12 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 32 mph.
Friday
Mostly cloudy, with a high near 59. Breezy, with a southwest wind 13 to 21 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 62.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Rain. Mostly cloudy, with a high near 59. Breezy.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Blustery.
Monday
Partly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Altamont IL
 39.04°N 88.76°W (Elev. 600 ft)
Last Update:
7:36 am CDT Mar 10, 2026
Forecast Valid:
8am CDT Mar 10, 2026-6pm CDT Mar 16, 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