Foster Lake, WI 7-Day Weather Forecast
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Foster Lake Weather Forecast


Foster Lake, WI Weather Forecast Date: 602 PM CDT Mon Sep 14 2026
Weather forecast for Foster Lake, WI
| Tonight Lo: 51°F Lo: 11°C |
Tonight... Warmer. Showers and a slight chance of thunderstorms in the evening, then showers likely after midnight. Lows in the lower 50s. South wind 10 to 20 mph with gusts to around 35 mph. Chance of rain near 100%. |
| Tue Hi: 70°FHi: 21°C Lo: 41°F Lo: 5°C |
Tuesday... Breezy. Mostly cloudy in the morning then clearing. Highs around 70. Southwest wind 10 to 15 mph shifting to the west 15 to 25 mph in the afternoon. Gusts up to 35 mph. |
| Wed Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Wednesday... Partly cloudy. Highs in the upper 60s. Light and variable wind. |
| Thu Hi: 71°FHi: 22°C Lo: 49°F Lo: 9°C |
Thursday... Partly sunny. Highs in the lower 70s. |
| Fri Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Friday... Mostly cloudy with a 50% chance of showers. Highs in the upper 60s. |
| Sat Hi: 70°FHi: 21°C Lo: 49°F Lo: 9°C |
Saturday... Mostly cloudy with a 50% chance of showers. Highs around 70. |
| Sun Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Sunday... Mostly cloudy with a 30% chance of showers. Lows in the upper 40s. Highs in the upper 60s. |
| Sun Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Sunday... Mostly cloudy with a 30% chance of showers. Lows in the upper 40s. Highs in the upper 60s. |
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