ONTARIO: Fall Colour Outlook for Monday, September 11, 2023

NOTE: YOU CAN CLICK ON THE MAP TO OPEN A ZOOMABLE IMAGE WHICH WILL BE EASIER TO READ.


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As we delve further into the heart of September, the autumn colours are beginning to take over the landscape across Southern Ontario. According to our latest data, parks in Norfolk County and the Western Greater Toronto Area (GTA) are reporting around 10% of the leaves have started to change colour.

Deep Southwestern Ontario, encompassing locales such as Leamington, Chatham, and Grand Bend, is the sole exception, yet to hit the 10% milestone. Although data from these areas hasn't been updated in recent days, it's conceivable that they are very close to reaching the 10% threshold.

Please note: This forecast relies on extrapolating data collected from various parks throughout Southern Ontario. Since some parks do not provide daily updates, we may draw data from adjacent regions to formulate our estimated leaf change predictions. This also means that the data displayed on the map may not exactly match what is occurring in your backyard.


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Fall Colour Report

Fall Colour Report by park

Park Name Colour Change (%) Tree Coverage
Algonquin 10% 100%
Arrowhead 10% 100%
Balsam Lake 10% 90%
Bass Lake 10% 100%
Bonnechere 10% 90%
Bronte Creek 10% 100%
Darlington 10% 100%
Frontenac 10% 100%
Inverhuron 10% 100%
Killarney 10% 100%
Lake St. Peter 10% 100%
Long Point 10% 90%
MacGregor Point 10% 90%
McRae Point 10% 90%
Mikisew 10% 100%
Mono Cliffs 10% 100%
Petroglyphs 10% 100%
Point Farms 10% 100%
Restoule 10% 100%
Sauble Falls 10% 100%
Sharbot Lake 10% 90%
Sibbald Point 10% 90%
Turkey Point 10% 90%
Voyageur 10% 90%

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The ideal time to witness the full glory of fall colours in Southern Ontario is when the colour change percentage reaches its peak, often around 70-90%, and the tree coverage is above 50%.

The peak of fall colours in Southern Ontario typically lasts for about one to two weeks, although the exact duration can vary from year to year depending on weather conditions.

Data courtesy of Ontario Parks