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

Hazardous Weather Conditions

Current conditions at

Edgar County Airport (KPRG)

Lat: 39.7°NLon: 87.67°WElev: 650ft.

Heavy Rain

60°F

16°C

Humidity 98%
Wind Speed NA
Barometer 29.79 in
Dewpoint 60°F (16°C)
Visibility 5.00 mi
Last update 18 Apr 1:35 am CDT
Extended Forecast for

Sidell IL

Flood Watch until April 18, 04:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until April 18, 04:00am

    NOW until 4:00am Sat

    Flood Watch

  • Overnight

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Showers likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 51 by 9am. West northwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F⇓

    Showers
    Likely then
    Partly Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 37. Northwest wind 5 to 13 mph becoming southwest after midnight. Winds could gust as high as 21 mph.

    Low: 37 °F

    Mostly Clear
    then Patchy
    Frost

  • Sunday

    Sunday: Patchy frost before 8am. Otherwise, sunny, with a high near 59. Breezy, with a west northwest wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 59 °F

    Patchy Frost
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 18 mph.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 58. Light and variable wind.

    High: 58 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75. Breezy.

    High: 75 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 50. Southwest wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers likely, mainly before 9am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 51 by 9am. West northwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 37. Northwest wind 5 to 13 mph becoming southwest after midnight. Winds could gust as high as 21 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 59. Breezy, with a west northwest wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.
Sunday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 18 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 58. Light and variable wind.
Monday Night
Mostly clear, with a low around 45. South southeast wind 5 to 11 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 75. Breezy.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
A chance of showers. Partly cloudy, with a low around 61.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. Breezy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sidell IL
 39.89°N 87.82°W (Elev. 686 ft)
Last Update:
1:53 am CDT Apr 18, 2026
Forecast Valid:
1am CDT Apr 18, 2026-6pm CDT Apr 24, 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