| NWS Forecast for: Grundy County Issued by: National Weather Service Chicago, IL Last Update: 851 PM CDT Sun Aug 2 2026 | |
Tonight: Mostly clear in the evening, then becoming partly cloudy. Patchy fog late. Lows around 60. North winds 5 to 10 mph. Monday: Partly cloudy. Patchy fog early in the morning. Highs in the lower 80s. Northeast winds around 5 mph. Monday Night: Mostly clear. Lows around 60. Southeast winds around 5 mph. Tuesday: Mostly sunny. Highs in the mid 80s. South winds around 5 mph. Tuesday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. South winds around 5 mph. Wednesday: Mostly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 40 percent. Wednesday Night: Showers likely with a chance of thunderstorms. Lows in the mid 60s. Chance of precipitation 70 percent. Thursday: Mostly cloudy. Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of precipitation 60 percent. Thursday Night: Partly cloudy. Lows in the mid 60s. Friday: Mostly cloudy. Highs in the lower 80s. Friday Night: Partly cloudy. Lows in the mid 60s. Saturday: Mostly cloudy in the morning, then becoming partly cloudy. Highs in the mid 80s. Saturday Night: Mostly clear. Lows in the upper 60s. Sunday: Partly cloudy. Highs in the upper 80s. | |
| Zone Forecast: Grundy County | |
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