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Battle of the Windmill National Historic Site of Canada


The weather in eastern Ontario is quite variable. Summers can be hot, sunny and humid. Winters can be severe with large accumulations of snow. Spring and autumn offer the most moderate weather conditions.

  Average Lows Average Highs
Spring 8°C 13°C
Summer 16°C 29°C
Autumn 6°C 16°C
Winter -15°C -5°C

In the spring and autumn bring along a light jacket or sweater and always have comfortable footwear. Winter visitors should don a warm coat, hat and gloves while touring the fort's grounds.

Environment Canada's Weather Conditions & Forecasts

Ontario (including Kingston, Ottawa and Surrounding Areas): Current Forecast rooms are not accessible.