Areas of Dangerous Heat and Heavy Rain with Possible Flooding This Week

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Current conditions at

Edgar County Airport (KPRG)

Lat: 39.7°NLon: 87.67°WElev: 650ft.

Fair

77°F

25°C

Humidity 78%
Wind Speed NE 5 mph
Barometer 30.13 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Sep 10:15 pm CDT
Extended Forecast for

Westville IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 3am and 4am.  Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming light and variable  after midnight.  Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 87. Light and variable wind becoming southeast around 5 mph in the afternoon.  Chance of precipitation is 50%.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 71. Light and variable wind.  Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers before 1pm.  Partly sunny, with a high near 88. Northwest wind 3 to 5 mph.

    High: 88 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 67. Calm wind becoming northeast around 5 mph after midnight.

    Low: 67 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 87. East wind 5 to 7 mph.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67. East wind around 8 mph becoming south southeast after midnight.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly between 3am and 4am. Mostly cloudy, with a low around 70. Southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87. Light and variable wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 50%.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Light and variable wind. Chance of precipitation is 20%.
Thursday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 88. Northwest wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 67. Calm wind becoming northeast around 5 mph after midnight.
Friday
Mostly sunny, with a high near 87. East wind 5 to 7 mph.
Friday Night
Partly cloudy, with a low around 67. East wind around 8 mph becoming south southeast after midnight.
Saturday
Mostly sunny, with a high near 92.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 69.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 64.
Monday
A chance of showers. Partly sunny, with a high near 80.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Westville IL
 40.03°N 87.63°W (Elev. 656 ft)
9:36 pm CDT Sep 15, 2026
10pm CDT Sep 15, 2026-6pm CDT Sep 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database