Weather Forecast for
Grundy County, IL


Today: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South wind 10 to 15 mph, with gusts as high as 20 mph.

Tonight: Showers and thunderstorms likely, mainly between midnight and 2am. Mostly cloudy, with a low around 71. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. Heat index values as high as 98. Calm wind becoming southwest around 5 mph in the afternoon. Winds could gust as high as 10 mph.

Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. South wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 60%.

Tuesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. West southwest wind around 5 mph, with gusts as high as 10 mph.

Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Wednesday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.

Wednesday Night: A chance of showers before 1am. Mostly cloudy, with a low around 68.

Thursday: A chance of showers after 1pm. Mostly cloudy, with a high near 80.

Thursday Night: Mostly cloudy, with a low around 63.

Friday: Partly sunny, with a high near 77.

Friday Night: A chance of showers. Mostly cloudy, with a low around 63.

Saturday: A chance of showers. Mostly cloudy, with a high near 78.

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