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Boston Lake, IL 7-Day Weather Forecast
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Boston Lake Weather Forecast
Boston Lake, IL Weather Forecast Date: 428 AM CDT Thu Aug 13 2026
Weather forecast for Boston Lake, IL
Today Hi: 91°FHi: 33°C Lo: 75°F Lo: 24°C |
Today... Partly sunny. A chance of showers and thunderstorms, mainly this morning. Highs in the lower 90s. South winds around 5 mph. Chance of rain 30%. Heat index values up to 110 this afternoon. |
Fri Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
Friday... Mostly sunny. Hot with highs in the mid 90s. South winds around 5 mph. Heat index values up to 111 in the afternoon. |
| Sat Hi: 95°FHi: 35°C Lo: 79°F Lo: 26°C |
Saturday... Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph. Heat index values up to 110. |
| Sun Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Sunday... Mostly clear. Hot. Lows in the upper 70s. Highs in the mid 90s. Heat index values up to 110. |
| Mon Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Monday... Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40%. |
| Tue Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Tuesday... Mostly clear. Highs in the mid 80s. Lows in the upper 60s. |
| Wed Hi: 90°FHi: 32°C |
Wednesday... Mostly sunny. Highs around 90. |
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