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

79°F

26°C

Humidity 35%
Wind Speed N 5 mph
Barometer 30.04 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 28 Sep 2:35 pm CDT
Extended Forecast for

Sidell IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 78. Light north northeast wind.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 51. Calm wind.

    Low: 51 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. South southeast wind 3 to 6 mph.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 87. South wind 6 to 11 mph, with gusts as high as 17 mph.

    High: 87 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 68. South wind 6 to 9 mph, with gusts as high as 17 mph.

    Low: 68 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers. Mostly cloudy, with a high near 84. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 84 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 61. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 78. Light north northeast wind.
Tonight
Clear, with a low around 51. Calm wind.
Tuesday
Sunny, with a high near 83. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 59. South southeast wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 87. South wind 6 to 11 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly cloudy, with a low around 68. South wind 6 to 9 mph, with gusts as high as 17 mph.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 84. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 61. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 54.
Saturday
A chance of showers. Mostly cloudy, with a high near 70.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 54.
Sunday
Partly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sidell IL
 39.91°N 87.82°W (Elev. 659 ft)
Last Update:
2:01 pm CDT Sep 28, 2026
Forecast Valid:
2pm CDT Sep 28, 2026-6pm CDT Oct 4, 2026
 
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