Sleeping Giant, Thunder Bay

Northern

No changePeak Sep 19–Sep 27 · ±6.3 days

Source: Ontario Parks Fall Colour Report, Aug 20 · 0% colour change at Sleeping Giant

Birch and poplar gold rather than maple red. First in the province to go.

The season curve

Sep 1–Nov 2 2026

Colour change, percent

Observed Predicted Confidence band

Solid line: colour change reported by Ontario Parks, weekly, latest Aug 20. Dashed line: the ontariofall.com model, run Sep 1, with the confidence band widening as the forecast reaches further out. Green dotted: our camera colour index, inverted so less green reads as more colour and stretched across its own observed range, so read its shape rather than its height against the percentage axis. Weather by Open-Meteo, CC BY 4.0. Free to republish with credit and a link.

The next 3 weekends here

Out of 10, colour and weather combined. The notch on each bar marks 8.0, the point where colour is at peak and the weather is behaving.

Sep 5 – Sep 6
Not worth the drive. Starting on Sep 5, sun.
2.4
Sep 12 – Sep 13
Fine, not special. Patchy on Sep 12, cloudy.
4.4
Sep 19 – Sep 20
Go this weekend. Peak on Sep 19, no weather forecast yet.
8.0

What is moving this forecast

Cold nights: 0 so far against a normal pace of 0.8 (+0.3 days).
September temperature anomaly: 0°C (0 days).
Summer rainfall: 162 mm against a normal 205 mm (-2.5 days).
Hard frosts: 0 (0 days).
Observations assimilated: 0 (0 days).
Net shift from the historical baseline: -2.2 days.

Weather data by Open-Meteo.com, CC BY 4.0 · every coefficient is published in the methodology

See for yourself

No camera covers this location yet.
The ground reports below carry it instead.
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Reports from the ground

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Sources for this page

Colour status · Source: Ontario Parks Fall Colour Report · Aug 20
Weather · Open-Meteo, CC BY 4.0 · daily to Sep 1
Ground reports · reader submissions, moderated · 0 shown

Last updated Tue, September 1, 2026.

Be there for it

Go with a group of people your age

Hiking and paddling weekends run by Wilderness Union, a Toronto outdoor community for ages 18 to 45. Transport, gear and guides included.

See the adventures

Or see every fall trip in date order, with the colour forecast for each destination.