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

Heavy Rainfall for Portions of the West and Central U.S.; Monitoring Fire Weather Conditions for New England

Tropical moisture continues to flow across portions of the Great Basin, desert Southwest and California. Isolated instances of flash flooding remains possible. Meanwhile, a storm and associated frontal boundary will focus showers and thunderstorms for the center of the nation. For New England, dry and breezy conditions could enhance favorable fire weather conditions. Read More >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Mostly Cloudy

65°F

18°C

Humidity 89%
Wind Speed E 6 mph
Barometer 30.03 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 20 Sep 4:15 am CDT
Extended Forecast for

Granville IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 62. East wind around 5 mph.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 79 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 64. Northwest wind around 5 mph becoming southeast after midnight. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 79. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 62. East wind around 5 mph.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 79. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 64. Northwest wind around 5 mph becoming southeast after midnight. Chance of precipitation is 60%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 79. Southeast wind around 5 mph becoming southwest in the afternoon. Chance of precipitation is 30%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 62.
Monday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Monday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Chance of precipitation is 50%.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 60.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 74.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 73.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 55.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Granville IL
 41.26°N 89.24°W (Elev. 699 ft)
Last Update:
4:16 am CDT Sep 20, 2025
Forecast Valid:
4am CDT Sep 20, 2025-6pm CDT Sep 26, 2025
 
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