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Grundy County, IL Weather Forecast
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Grundy County Weather Forecast
| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | |  |  |  | | | |  |  |  |
| Chance of Rain | Rain | Chance of Showers | Rain Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Showers Likely | Mostly Cloudy | Partly Cloudy |
| Lo: 35°FLo: 2°C | Hi: 45°FHi: 7°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C |
| POP: 20% | POP: 70% | POP: 50% | POP: 50% | POP: 70% | POP: 80% | POP: 30% | POP: 70% | POP: 90% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 829 PM CST Mon Mar 02 2026 
Grundy County Radar Loop
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