| NWS Forecast for: Grundy County Issued by: National Weather Service Chicago, IL Last Update: 230 PM CST Fri Jan 9 2026 |  |
| Tonight: Mostly cloudy. A chance of rain after midnight. Lows in the mid 30s. East winds around 5 mph. Chance of precipitation 50 percent. Saturday: Mostly cloudy. Rain and snow in the morning, then a chance of snow showers in the afternoon. Snow accumulation up to half an inch. Blustery with highs in the upper 30s. West winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Chance of precipitation 90 percent. Saturday Night: Mostly cloudy. Scattered snow showers, mainly in the evening. Snow accumulation around half an inch. Blustery with lows in the lower 20s. West winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 40 percent. Sunday: Partly cloudy in the morning, then clearing. Blustery with highs in the lower 30s. Northwest winds 15 to 20 mph, diminishing to 10 to 15 mph in the afternoon. Gusts up to 30 mph. Sunday Night: Mostly clear in the evening, then becoming partly cloudy. Near steady temperature in the upper 20s. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph after midnight. Monday: Partly cloudy in the morning, then clearing. Highs in the lower 40s. Monday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 30s. Tuesday: Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs in the upper 40s. Chance of precipitation 30 percent. Tuesday Night: Mostly cloudy with a chance of rain. Lows around 30. Chance of precipitation 30 percent. Wednesday: Mostly cloudy. A chance of snow in the afternoon. Highs in the mid 30s. Chance of precipitation 40 percent. Wednesday Night: Mostly cloudy. Lows around 20. Thursday: Mostly cloudy. Highs around 30. Thursday Night: Mostly cloudy with a 30 percent chance of snow. Lows in the lower 20s. Friday: Mostly cloudy. A chance of snow in the afternoon. Highs in the mid 30s. Chance of precipitation 30 percent. | |
| Zone Forecast: Grundy County | |
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