Winter tire dates for Golden Horseshoe
Computed from the 30-year climate record at Shanty Bay, the official Environment Canada station 12 km from Golden Horseshoe, Ontario.
All-day events with a one-week reminder, straight from this page.
The climate record behind these dates
Mean daily temperature by month at Shanty Bay, 30-year normals. The tire windows fall where this line crosses 7 C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -7.7 | -6.5 | -1.9 | 5.7 | 12.1 | 17.4 | 20.1 | 19.2 | 15.2 | 8.7 | 2.6 | -3.6 |
Values below 7 C shown in blue: winter tire season at Golden Horseshoe.
The rule in Ontario
No law
Ontario does not require winter tires. Since January 1, 2016, every Ontario auto insurer must offer a premium discount when all four wheels carry winter tires; you usually have to declare it to your insurer. Typical discounts run 2 to 5 percent. Declare your winter tires to your insurer; the discount is mandated but not automatic.
Government of Ontario, verified 2026-06-11. Full 13-province table on the planner page.
Golden Horseshoe winter tire questions
When should winter tires go on in Golden Horseshoe?
Around October 24. That is when the mean daily temperature at Shanty Bay, the official station nearest Golden Horseshoe, historically settles below 7 C, the threshold where winter compounds outgrip all-seasons even on dry pavement. Book the swap a week or two ahead; shops fill up after the first cold snap.
When do winter tires come off in Golden Horseshoe?
After April 21, when mean daily temperatures climb back above 7 C to stay. Taking them off earlier risks a late cold snap; much later wears the soft compound on warm pavement.
Is there a winter tire law in Ontario?
No winter tire law. Since January 1, 2016 insurers must offer a winter tire discount, typically 2 to 5 percent. Declare your winter tires to your insurer; the discount is mandated but not automatic. Source: Government of Ontario, verified 2026-06-11.
How are these dates calculated?
From Environment and Climate Change Canada 30-year climate normals at Shanty Bay (12 km from Golden Horseshoe): monthly mean daily temperatures anchored mid-month, linearly interpolated across the 7 C threshold. They are planning averages from the official record, not forecasts. Full method on the methodology page.
How this page was made
The dates above are computed, not written: monthly mean daily temperatures from the Environment and Climate Change Canada Canadian Climate Normals at Shanty Bay, interpolated across the 7 C tire-compound threshold. The provincial rule is taken from Government of Ontario and was last verified 2026-06-11. Full method: data and methodology. These are planning averages from the official record, not forecasts: microclimates, valleys, and lakeshores can run a week off the station record, and laws can change. Watch the forecast in the shoulder weeks and confirm current rules at the linked source before acting.
More for Golden Horseshoe: frost and planting dates. Different place? The full planner covers all 655 stations.