| NWS Forecast for: Grundy County Issued by: National Weather Service Chicago, IL Last Update: 843 AM CST Fri Dec 26 2025 |  |
Rest Of Today: Cloudy. A slight chance of rain early in the morning. Areas of dense fog late in the morning. Highs in the lower 50s. West winds 5 to 10 mph, increasing to northwest 10 to 15 mph in the afternoon. Chance of precipitation 20 percent. Tonight: Cloudy. Patchy fog after midnight. Lows around 40. North winds around 5 mph in the evening, becoming light and variable. Saturday: Cloudy. Patchy fog early in the morning. Highs in the upper 40s. Southeast winds 5 to 10 mph. Saturday Night: Cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 40s. Temperature rising into the mid 50s after midnight. South winds 5 to 10 mph. Chance of precipitation 50 percent. Sunday: Showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Southwest winds 5 to 10 mph, increasing to west 10 to 15 mph in the afternoon. Chance of precipitation 90 percent. Sunday Night: Cloudy. A chance of rain and snow showers, mainly in the evening. Breezy with lows around 20. Chance of precipitation 50 percent. Monday: Mostly cloudy. A slight chance of snow showers in the morning. Blustery with highs in the mid 20s. Chance of precipitation 20 percent. Monday Night: Mostly clear. Lows 10 to 15. Tuesday: Partly cloudy in the morning, then becoming mostly cloudy. Highs in the lower 30s. Tuesday Night: Mostly cloudy. Lows in the lower 20s. Wednesday: Mostly cloudy. Highs in the upper 20s. Wednesday Night: Mostly cloudy. Lows around 10 above. New Years Day: Mostly cloudy in the morning, then becoming partly cloudy. Highs in the mid 20s. | |
| Zone Forecast: Grundy County | |
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