Climate and weather averages
What Toronto's weather is normally like, month by month, from the official Environment Canada climate normals.
A climate normal is a thirty-year average, not a forecast and not last year. Comparing a normal against today’s weather is how you tell whether a day is unusual for the time of year. This page uses the 1981-2010 normals for TORONTO (Toronto (downtown)).
The year at a glance
Month by month
| Month | Mean °C | Daily high °C | Daily low °C | Rain mm | Snow cm | Precip mm |
|---|---|---|---|---|---|---|
| January | -3.7 | -0.7 | -6.7 | 29 | 37 | 62 |
| February | -2.6 | 0.4 | -5.6 | 30 | 27 | 55 |
| March | 1.4 | 4.7 | -1.9 | 34 | 20 | 54 |
| April | 7.8 | 11.5 | 4.1 | 61 | 5 | 68 |
| May | 14.1 | 18.4 | 9.9 | 82 | 0 | 82 |
| June | 19.4 | 23.8 | 14.9 | 71 | 0 | 71 |
| July | 22.3 | 26.6 | 18.0 | 64 | 0 | 64 |
| August | 21.5 | 25.5 | 17.4 | 81 | 0 | 81 |
| September | 17.2 | 21.0 | 13.4 | 85 | 0 | 85 |
| October | 10.7 | 14.0 | 7.4 | 64 | 0 | 64 |
| November | 4.9 | 7.5 | 2.3 | 75 | 8 | 84 |
| December | -0.5 | 2.1 | -3.1 | 38 | 24 | 61 |
The same station records an average of 2,066 hours of bright sunshine a year, and 145 days a year with measurable precipitation. Sunshine is measured with a recorder rather than estimated from cloud cover, which is why some stations — Halifax among them — do not publish it.
Frost and the growing season
The frost-free period averages 203 days a year at this station. The last frost of spring falls around day 103 of the year and the first frost of autumn around day 307. Days are counted from 1 January.
Official sources
Details such as fares, fees, hours and program rules change. Always confirm against the official source before acting on anything time-sensitive.