Winter tire dates for Mississauga
Computed from the 30-year climate record at Toronto Lester B. Pearson Intl Airport, the officialEnvironment Canada station 11 km from Mississauga, 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 Toronto Lester B. Pearson Intl Airport, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| -5.5 | -4.5 | 0.1 | 7.1 | 13.1 | 18.6 | 21.4 | 20.6 | 16.2 | 9.5 | 3.7 | -2.2 |
Values below 7 C shown in blue: winter tire season at Mississauga.
The rule in Ontario
No law
For private-passenger auto policies issued or renewed on or after January 1, 2016, Ontario's regulation requires a winter-tire discount in the rate for an automobile equipped with winter tires. Ask your insurer which tires qualify and what documentation it requires; the amount varies by insurer. Ask your insurer which tires qualify and what documentation it requires.
Ontario e-Laws, Automobile Insurance, verified 2026-09-27. Full 13-province table on the planner page.
Mississauga winter tire questions
When should winter tires go on in Mississauga?
Around October 28. That is when the mean daily temperature at Toronto Lester B. Pearson Intl Airport, the official station nearest Mississauga, 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 Mississauga?
After April 15, 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 provincewide winter-tire mandate for passenger vehicles; insurance regulation requires a discount for equipped private-passenger vehicles. Ask your insurer which tires qualify and what documentation it requires. Source: Ontario e-Laws, Automobile Insurance, verified 2026-09-27.
How are these dates calculated?
From Environment and Climate Change Canada Canadian Climate Normals 30-year climate normals at Toronto Lester B. Pearson Intl Airport (11 km from Mississauga): 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 theEnvironment and Climate Change Canada Canadian Climate Normalsat Toronto Lester B. Pearson Intl Airport, interpolated across the 7 C tire-compound threshold. The provincial rule is taken from Ontario e-Laws, Automobile Insurance and was last verified 2026-09-27.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 sourcebefore acting.
More for Mississauga: frost and planting dates. Different place? The full planner covers all 655 stations.