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Split Rock Lake, IL 7-Day Weather Forecast
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Split Rock Lake Weather Forecast
Split Rock Lake, IL Weather Forecast Date: 241 PM CDT Thu Sep 17 2026
Weather forecast for Split Rock Lake, IL
Late Today Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Late This Afternoon... Mostly cloudy. A slight chance of showers and thunderstorms or patchy drizzle. Temperatures in the mid 80s. Northwest winds around 5 mph. Chance of precipitation 20%. |
| Fri Hi: 75°FHi: 24°C Lo: 65°F Lo: 18°C |
Friday... Mostly cloudy. A slight chance of showers. A slight chance of thunderstorms late. Highs in the mid 70s. East winds 5 to 10 mph. Chance of precipitation 20%. |
| Sat Hi: 80°FHi: 27°C Lo: 65°F Lo: 18°C |
Saturday... A chance of thunderstorms in the morning. Showers. A slight chance of thunderstorms in the afternoon. Humid with highs around 80. South winds 5 to 10 mph. Chance of precipitation 80%. |
| Sun Hi: 71°FHi: 22°C Lo: 59°F Lo: 15°C |
Sunday... A slight chance of thunderstorms. Showers likely, mainly in the morning. Highs in the lower 70s. Chance of precipitation 70%. |
Mon Hi: 65°FHi: 18°C Lo: 55°F Lo: 13°C |
Monday... Showers likely, mainly in the morning. Highs in the mid 60s. Chance of precipitation 60%. |
Tue Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy. A chance of showers in the morning. Highs in the mid 60s. Chance of precipitation 30%. |
Wed Hi: 70°FHi: 21°C Lo: 55°F Lo: 13°C |
Wednesday... Partly cloudy in the morning, then becoming mostly cloudy. Highs around 70. |
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