September Rainfall and Precipitation in Thousand Islands National Park

Average rainfall, rainy days and the driest cities in Thousand Islands National Park, Canada in September.

Thousand Islands National Park, Canada, a region in Canada, typically experiences moderate rainy weather in September, with average rainfall around 85 mm (3.3 in) in Brockville.

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For a detailed overview over the year and the best time to visit Thousand Islands National Park, check out our Thousand Islands National Park's climate page.

See also: Thousand Islands National Park weather by month.

Best Places to Visit in Thousand Islands National Park in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Thousand Islands National Park.

Conditions Temperatures Precipitation
Monthly precipitation 0 mm (0 in) dry → 150 mm (5.9 in) wet

Marker color shows total monthly precipitation in September: pale blue is dry, deep blue is wet.

See all September weather averages, cities and regions in Thousand Islands National Park

Thousand Islands National Park precipitation in September: frequently asked questions

How much rainfall does Thousand Islands National Park, Canada receive in September?

Brockville sees moderate rainfall in September, averaging around 85 mm (3.3 in). Most days stay dry, with the occasional shower.

How many days does it rain in Thousand Islands National Park, Canada in September?

Expect around 12 days rainy days in Brockville during September.

Is September part of the rainy season in Thousand Islands National Park, Canada?

Not really. September is outside the wettest stretch of the year in Thousand Islands National Park, Canada.

Interested in more climate information?

We have much more information about the climate in Thousand Islands National Park.

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