Boisbriand climate — normals and trends
Boisbriand (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.8 °C and it receives 1,020 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (21.5 °C on average) and the coldest is January (-9.5 °C). Rainfall peaks in October.
Boisbriand averages 139 frost days, 6 hot days (≥ 30 °C) and 135 rainy days per year.
Boisbriand has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 148 to 130 per year over the period.
The hottest day of the period reached 34.8 °C (on 1 August 1975) and the coldest -36.0 °C (on 15 January 1957).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BoisbriandQuebec
- coords
- 45.62°, -73.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.8°C
Average daily high
10.9°C
Average daily low
2.7°C
Annual rainfall
1,020mm
Sunshine / day
8.5h
Mean relative humidity
73%
Average peak wind
18.5km/h
Seasonal range
31.0°C
Frost days (< 0 °C)
139 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
135 d/yr
Annual snowfall
148.8 cm
Average feels-like high
8.3 °C
Average feels-like low
-0.6 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
12 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.33 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
34.8 °C
1 August 1975
Coldest day
-36.0 °C
15 January 1957
Wettest day
105 mm
9 August 2024
Windiest day
55.3 km/h
25 February 1956
Strongest gust
104.0 km/h
1 November 2019
Hottest feels-like
39.7 °C
1 August 1975
Coldest feels-like
-41.3 °C
15 January 1957
Snowiest day
32.9 cm
30 November 1944
Sunniest day
15.5 h
22 June 2023
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -4.9 °C | +0.5 °C | 45 mm | -24 mm |
| Feb | -4.6 °C | -0.9 °C | 82 mm | +17 mm |
| Mar | 4.3 °C | +2.3 °C | 88 mm | +14 mm |
| Apr | 10.9 °C | +1.1 °C | 100 mm | +7 mm |
| May | 17.8 °C | +0.1 °C | 105 mm | +18 mm |
| Jun | 24.7 °C | +1.5 °C | 83 mm | -10 mm |
| Jul | 27.3 °C | +1.5 °C | 79 mm | -10 mm |
| Aug | 25.6 °C | +1.1 °C | 51 mm | -38 mm |
| Sep | 22.1 °C | +2.1 °C | 47 mm | -44 mm |
| Oct | 15.6 °C | +2.5 °C | 144 mm | +51 mm |
| Nov | 3.8 °C | -1.8 °C | 105 mm | +14 mm |
| Dec | -3.4 °C | -1.2 °C | 74 mm | -12 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Boisbriand?
Boisbriand has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.8 °C and it receives 1,020 mm of precipitation per year.
What is the hottest day ever recorded in Boisbriand?
The hottest day measured in Boisbriand between 1940 and 2025 was 1 August 1975, reaching 34.8 °C.
What is the coldest day in Boisbriand?
The coldest day measured in Boisbriand between 1940 and 2025 was 15 January 1957, at -36.0 °C.
Does it snow in Boisbriand?
Yes. Boisbriand gets on average 148.8 cm of snow per year and has around 139 frost days.
Has the climate of Boisbriand warmed?
Yes: Boisbriand warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Boisbriand?
The wettest day measured in Boisbriand between 1940 and 2025 was 9 August 2024, with 105 mm of rain in 24 hours.
What was the windiest day in Boisbriand?
The windiest day measured in Boisbriand between 1940 and 2025 was 25 February 1956, with winds reaching 55.3 km/h.
What is the warmest month in Boisbriand?
The warmest month in Boisbriand is July (21.5 °C on average); the coldest is January (-9.5 °C).
How much does it rain in Boisbriand?
Boisbriand receives on average 1,020 mm of precipitation per year, spread over about 135 rainy days.
Is it sunny in Boisbriand?
Boisbriand gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Boisbriand?
The heaviest 24-hour snowfall measured in Boisbriand between 1940 and 2025 was 30 November 1944, with 32.9 cm.
Are there tropical nights in Boisbriand?
Yes: Boisbriand has on average 12 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Boisbriand?
In Boisbriand, between 1940 and 2025, the highest apparent temperature reached 39.7 °C on 1 August 1975, and the lowest was -41.3 °C on 15 January 1957.
Compare Boisbriand with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Boisbriand