National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Edgar County Airport (KPRG)

Lat: 39.7°NLon: 87.67°WElev: 650ft.

Fair and Breezy

63°F

17°C

Humidity 68%
Wind Speed S 22 mph
Barometer 29.88 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 9 Mar 11:55 am CDT
Extended Forecast for

Sidell IL

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 72. South southwest wind 16 to 18 mph, with gusts as high as 26 mph.

    High: 72 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 59 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 76. South southwest wind 10 to 18 mph, with gusts as high as 25 mph.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely before 9pm, then showers and thunderstorms likely between 9pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 56. South wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    T-storms
    Likely then
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 63 by 10am, then falling to around 45 during the remainder of the day. Breezy, with a southwest wind 20 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 63 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Cloudy during the early evening, then gradual clearing, with a low around 30. Blustery, with a north northwest wind 11 to 20 mph, with gusts as high as 29 mph.

    Low: 30 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 47. Northwest wind around 8 mph becoming southwest in the afternoon.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 39. Breezy.

    Low: 39 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 56. Breezy.

    High: 56 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 72. South southwest wind 16 to 18 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 59. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 76. South southwest wind 10 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely before 9pm, then showers and thunderstorms likely between 9pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 56. South wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 63 by 10am, then falling to around 45 during the remainder of the day. Breezy, with a southwest wind 20 to 23 mph becoming northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Wednesday Night
Cloudy during the early evening, then gradual clearing, with a low around 30. Blustery, with a north northwest wind 11 to 20 mph, with gusts as high as 29 mph.
Thursday
Mostly sunny, with a high near 47. Northwest wind around 8 mph becoming southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 39. Breezy.
Friday
Mostly cloudy, with a high near 56. Breezy.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Mostly cloudy, with a high near 55.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 42.
Sunday
Rain likely. Mostly cloudy, with a high near 62. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Sidell IL
 39.89°N 87.82°W (Elev. 686 ft)
Last Update:
12:01 pm CDT Mar 9, 2026
Forecast Valid:
12pm CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation