Climate of Toronto, Canada

Dfa

Köppen-Geiger climate classification: Dfa — Cold, no dry season, hot summer.

Toronto has a mean annual temperature of 9.1 °C and receives 839 mm of precipitation per year (1991–2020 climate normals). The warmest month is July with a mean temperature of 21.9 °C, while January is the coldest month at -3.8 °C. Most precipitation falls in June (78 mm); the driest month is February (53 mm).

Climate Diagram

Climate diagram for Toronto: monthly mean temperature (red line, left axis, °C) and monthly precipitation (blue bars, right axis, mm), 1991–2020 0 0 10 20 20 40 30 60 40 80 °C mm J F M A M J J A S O N D

Walter–Lieth diagram: blue bars show monthly precipitation (right axis, mm), the red line shows monthly mean temperature (left axis, °C). Scale: 1 °C ≡ 2 mm.

Climate Table

MonthMean temperature (°C)Precipitation (mm)
January-3.864.6
February-3.453.1
March0.258.5
April6.677.0
May13.173.1
June18.577.8
July21.977.2
August21.577.0
September17.869.6
October11.369.1
November5.275.2
December-0.166.4
Year9.1838.6

Live Forecast

Looking for the current weather instead of climate averages? Open the live forecast diagrams in WZ Diagrams — 15 weather models, ensemble spread, radar and more.

Data Source

Climate normals and Köppen-Geiger classification: Beck et al. (2023), Scientific Data 10, 724, CC BY 4.0. Period 1991–2020. Classification resolution ≈ 1 km; monthly climate data resolution ≈ 1 km (0.01°, Original 2023 release; predates the January 2026 correction), sampled at the grid cell containing the city coordinates (43.65°, -79.38°). Climate normals describe the long-term average, not current weather.