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Foster Park, IL 7-Day Weather Forecast
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Foster Park Weather Forecast
Foster Park, IL Weather Forecast Date: 705 PM CDT Wed Sep 16 2026
Weather forecast for Foster Park, IL
Tonight Lo: 69°F Lo: 21°C |
Tonight... Mostly cloudy. Scattered showers in the evening. Scattered thunderstorms late in the evening, then showers and thunderstorms after midnight. Locally heavy rainfall possible after midnight. Near steady temperature in the upper 60s. Northeast winds 5 to 10 mph, becoming north after midnight. Chance of precipitation 80%. |
Thu Hi: 75°FHi: 24°C Lo: 65°F Lo: 18°C |
Thursday... Cloudy. Numerous showers and thunderstorms early in the morning, then scattered showers and thunderstorms late in the morning. Humid with highs in the mid 70s. North winds 5 to 10 mph. Chance of precipitation 70%. |
Fri Hi: 75°FHi: 24°C Lo: 65°F Lo: 18°C |
Friday... Mostly cloudy. Highs in the mid 70s inland, but only in the lower 70s near the lake. East winds 5 to 10 mph. |
| Sat Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Saturday... Numerous showers and thunderstorms. Highs in the lower 80s. Chance of precipitation 70%. |
Sun Hi: 69°FHi: 21°C Lo: 61°F Lo: 16°C |
Sunday... A slight chance of thunderstorms in the morning. Cloudy with a chance of showers. Near steady temperature in the upper 60s. Chance of precipitation 50%. |
Mon Hi: 70°FHi: 21°C Lo: 59°F Lo: 15°C |
Monday... Mostly cloudy with a chance of showers. Highs around 70. Chance of precipitation 50%. |
| Tue Hi: 69°FHi: 21°C Lo: 59°F Lo: 15°C |
Tuesday... Mostly cloudy with a 30% chance of showers. Highs in the upper 60s. |
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