Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

64°F

18°C

Humidity 73%
Wind Speed W 20 G 25 mph
Barometer 30.06 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 May 5:22 pm CDT
Extended Forecast for

Granville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. North wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 69. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am.  Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 1pm.  Mostly cloudy, with a high near 66. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely before 1am.  Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. North wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 66. Northeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 44. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Partly sunny, with a high near 69. East wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 49.
Friday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 66. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers likely before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Saturday
Mostly cloudy, with a high near 74.
Saturday Night
Mostly cloudy, with a low around 55.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 57.
Memorial Day
Partly sunny, with a high near 81.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Granville IL
 41.26°N 89.24°W (Elev. 699 ft)
3:26 pm CDT May 19, 2026
5pm CDT May 19, 2026-6pm CDT May 26, 2026
 
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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