Weather Forecast for
Grundy County, IL


Today: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Heat index values as high as 99. West southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 30%.

Tonight: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southeast wind around 5 mph.

Tuesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Heat index values as high as 96. Southeast wind 5 to 10 mph becoming west in the afternoon.

Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. East northeast wind around 5 mph. Chance of precipitation is 70%.

Wednesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 86. East wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 50%.

Wednesday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 66.

Friday: A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 79.

Friday Night: A chance of showers after 1am. Mostly cloudy, with a low around 65.

Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 81.

Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67.

Sunday: Mostly sunny, with a high near 81.

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