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

78°F

26°C

Humidity 69%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 3 Aug 7:15 pm CDT
Extended Forecast for

4 Miles SW Vermilion IL

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Light east northeast wind.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light east southeast wind.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62. Light east wind.

    Low: 62 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny through mid morning, then becoming sunny, with a high near 84. Calm wind.

    High: 84 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers after 1am. Partly cloudy, with a low around 66. Light south wind.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. South southwest wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. Light east northeast wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light east southeast wind.
Tuesday Night
Mostly clear, with a low around 62. Light east wind.
Wednesday
Partly sunny through mid morning, then becoming sunny, with a high near 84. Calm wind.
Wednesday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 66. Light south wind.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. South southwest wind 3 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Partly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 70.
Monday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Vermilion IL
 39.53°N 87.64°W (Elev. 696 ft)
Last Update:
6:36 pm CDT Aug 3, 2026
Forecast Valid:
7pm CDT Aug 3, 2026-6pm CDT Aug 10, 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