Weather WorldFoster Lake, IL 7-Day Weather Forecast
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Foster Lake Weather Forecast
Foster Lake, IL Weather Forecast Date: 908 PM CDT Thu Sep 24 2026
Weather forecast for Foster Lake, IL
Tonight Lo: 61°F Lo: 16°C |
Tonight... Mostly cloudy. Lows in the lower 60s. Northeast winds around 5 mph. |
Fri Hi: 71°FHi: 22°C Lo: 59°F Lo: 15°C |
Friday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 70s. East winds around 5 mph. |
Sat Hi: 70°FHi: 21°C Lo: 59°F Lo: 15°C |
Saturday... Partly sunny in the morning, then becoming mostly cloudy. A 20% chance of showers. Highs around 70. East winds around 5 mph. |
| Sun Hi: 71°FHi: 22°C Lo: 59°F Lo: 15°C |
Sunday... Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 70s. Chance of rain 20%. |
Mon Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Monday... Partly cloudy. Lows in the upper 50s. Highs in the upper 70s. |
| Mon Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Monday... Partly cloudy. Lows in the upper 50s. Highs in the upper 70s. |
| Tue Hi: 79°FHi: 26°C Lo: 65°F Lo: 18°C |
Tuesday... Partly sunny. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 40%. |
Wed Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Wednesday... Showers likely with a slight chance of thunderstorms. Highs in the mid 70s. Chance of rain 70%. |
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