Climate of Montreal, Canada

Dfb

Köppen-Geiger climate classification: Dfb — Cold, no dry season, warm summer.

Montreal has a mean annual temperature of 7.5 °C and receives 1018 mm of precipitation per year (1991–2020 climate normals). The warmest month is July with a mean temperature of 22.1 °C, while January is the coldest month at -8.6 °C. Most precipitation falls in July (95 mm); the driest month is February (62 mm).

Climate Diagram

Climate diagram for Montreal: monthly mean temperature (red line, left axis, °C) and monthly precipitation (blue bars, right axis, mm), 1991–2020 -10 -20 0 0 10 20 20 40 30 60 40 80 50 100 °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-8.673.9
February-7.161.5
March-1.472.9
April6.685.5
May14.285.6
June19.493.6
July22.195.2
August20.894.9
September16.491.4
October9.494.6
November2.882.5
December-4.286.0
Year7.51017.6

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 (45.50°, -73.57°). Climate normals describe the long-term average, not current weather.