| NWS Forecast for: Grundy County Issued by: National Weather Service Chicago, IL Last Update: 302 AM CDT Sat Aug 30 2025 | |
| Today: Mostly cloudy. Isolated showers through mid morning. Highs in the mid 70s. East winds around 5 mph. Chance of precipitation 20 percent. Tonight: Mostly cloudy early in the evening, then clearing. Lows in the lower 50s. East winds around 5 mph. Sunday: Mostly sunny. Highs in the upper 70s. East winds around 5 mph. Sunday Night: Mostly clear. Lows in the mid 50s. East winds around 5 mph. Labor Day: Mostly sunny. Highs around 80. East winds around 5 mph. Monday Night: Mostly clear. Lows in the mid 50s. Tuesday: Mostly sunny. Highs in the lower 80s. Tuesday Night: Partly cloudy. Lows in the upper 50s. Wednesday: Mostly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Temperature falling into the upper 60s in the afternoon. Chance of precipitation 50 percent. Wednesday Night: Mostly cloudy. A chance of showers in the evening. Lows in the upper 40s. Chance of precipitation 30 percent. Thursday: Partly cloudy. Highs in the mid 60s. Thursday Night: Partly cloudy. Lows in the mid 40s. Friday: Partly cloudy. Highs in the lower 70s. | |
| Zone Forecast: Grundy County | |
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