Lake Simcoe - Marine Weather - Environment Canada Environment Canada https://www.weather.gc.ca 2026-06-10T15:27:13Z tag:weather.gc.ca,2013-04-16:20260610152713 https://www.weather.gc.ca/template/gcweb/v15.0.0/assets/wmms-alt.png https://www.weather.gc.ca/template/gcweb/v15.0.0/assets/favicon.ico Copyright 2026, Environment Canada Forecast for Today Tonight and Thursday. - Lake Simcoe 2026-06-10T15:30:00Z 2026-06-10T15:30:00Z Wind south 10 knots increasing to west 10 to 15 early this afternoon then diminishing to light early this evening. Wind light Thursday. Scattered showers and fog patches overnight and Thursday morning with a risk of thunderstorms. <br/>Issued 11:30 AM EDT 10 June 2026 tag:weather.gc.ca,2013-04-16:08300_regular_forecast:20260610153000