Deux-Montagnes climate — normals and trends

Q: What is the climate of Deux-Montagnes?

Deux-Montagnes has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.5 °C and it receives 1,037 mm of precipitation per year.

Q: What is the hottest day ever recorded in Deux-Montagnes?

The hottest day measured in Deux-Montagnes between 1940 and 2025 was 1 August 1975, reaching 34.7 °C.

Q: What is the coldest day in Deux-Montagnes?

The coldest day measured in Deux-Montagnes between 1940 and 2025 was 15 January 1957, at -35.9 °C.

Q: Does it snow in Deux-Montagnes?

Yes. Deux-Montagnes gets on average 154.7 cm of snow per year and has around 142 frost days.

Q: Has the climate of Deux-Montagnes warmed?

Yes: Deux-Montagnes warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Deux-Montagnes?

The wettest day measured in Deux-Montagnes between 1940 and 2025 was 9 August 2024, with 92 mm of rain in 24 hours.

Q: What was the windiest day in Deux-Montagnes?

The windiest day measured in Deux-Montagnes between 1940 and 2025 was 25 February 1956, with winds reaching 51.3 km/h.

Q: What is the warmest month in Deux-Montagnes?

The warmest month in Deux-Montagnes is July (21.2 °C on average); the coldest is January (-9.7 °C).

Q: How much does it rain in Deux-Montagnes?

Deux-Montagnes receives on average 1,037 mm of precipitation per year, spread over about 137 rainy days.

Q: Is it sunny in Deux-Montagnes?

Deux-Montagnes gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.

Deux-Montagnes (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.5 °C and it receives 1,037 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 (21.2 °C on average) and the coldest is January (-9.7 °C). Rainfall peaks in June.

Deux-Montagnes averages 142 frost days, 5 hot days (≥ 30 °C) and 137 rainy days per year.

Deux-Montagnes has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The number of frost days there went from about 150 to 134 per year over the period.

The hottest day of the period reached 34.7 °C (on 1 August 1975) and the coldest -35.9 °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

Deux-MontagnesQuebec

coords: 45.53°, -73.90°
period: 1940–2025 · 86 yrs

DfbWarm-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthFebruary

Mean daily temperature

6.5°C

Average daily high

10.6°C

Average daily low

2.4°C

Annual rainfall

1,037mm

Sunshine / day

8.5h

Mean relative humidity

73%

Average peak wind

17.9km/h

Seasonal range

30.9°C

Frost days (< 0 °C)

142 d/yr

Hot days (≥ 30 °C)

5 d/yr

Rainy days (≥ 1 mm)

137 d/yr

Annual snowfall

154.7 cm

Average feels-like high

8.1 °C

Average feels-like low

-0.9 °C

Average peak gust

35.8 km/h

Tropical nights (≥ 20 °C)

10 d/yr

Solar radiation

13.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.30 · p = < 0.001

19402025

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

34.7 °C

1 August 1975

Coldest day

-35.9 °C

15 January 1957

Wettest day

92 mm

9 August 2024

Windiest day

51.3 km/h

25 February 1956

Strongest gust

101.5 km/h

21 October 1995

Hottest feels-like

39.4 °C

1 August 1975

Coldest feels-like

-41.1 °C

15 January 1957

Snowiest day

32.8 cm

3 April 1975

Sunniest day

15.5 h

20 June 1952

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.3 °C11 August 2025	-24.5 °C2 February 2025	7.2 °C	1,026 mm	14	144
2024	31.7 °C19 June 2024	-19.0 °C23 December 2024	8.9 °C	1,163 mm	7	114
2023	31.9 °C6 July 2023	-30.1 °C4 February 2023	8.3 °C	1,288 mm	6	134
2022	31.2 °C6 August 2022	-29.8 °C22 January 2022	7.3 °C	1,181 mm	4	129
2021	31.3 °C26 August 2021	-24.2 °C31 January 2021	8.2 °C	917 mm	9	129
2020	33.7 °C9 July 2020	-24.1 °C9 February 2020	7.9 °C	1,102 mm	12	137
2019	32.8 °C4 July 2019	-24.6 °C22 January 2019	6.2 °C	1,232 mm	8	148
2018	33.6 °C4 July 2018	-28.8 °C2 January 2018	7.1 °C	1,148 mm	11	150
2017	30.8 °C18 June 2017	-26.9 °C28 December 2017	7.3 °C	1,378 mm	1	124
2016	31.6 °C10 August 2016	-28.9 °C14 February 2016	7.7 °C	1,122 mm	8	135
2015	31.5 °C29 July 2015	-29.2 °C8 January 2015	6.9 °C	974 mm	4	124
2014	30.7 °C1 July 2014	-28.0 °C2 January 2014	6.7 °C	1,026 mm	2	141
2013	31.9 °C16 July 2013	-29.4 °C17 December 2013	6.9 °C	978 mm	5	145
2012	32.2 °C21 June 2012	-26.0 °C15 January 2012	8.1 °C	926 mm	8	131
2011	32.9 °C21 July 2011	-28.9 °C24 January 2011	7.7 °C	1,215 mm	4	135
2010	32.9 °C8 July 2010	-21.4 °C30 January 2010	8.2 °C	1,075 mm	8	118
2009	31.4 °C17 August 2009	-31.6 °C16 January 2009	6.4 °C	999 mm	1	134
2008	30.4 °C8 July 2008	-24.2 °C29 February 2008	6.8 °C	1,196 mm	1	140
2007	31.0 °C2 August 2007	-27.1 °C30 January 2007	6.7 °C	995 mm	4	138
2006	33.1 °C1 August 2006	-20.2 °C11 February 2006	7.8 °C	1,209 mm	6	123
2005	32.2 °C27 June 2005	-28.4 °C22 January 2005	7.2 °C	1,125 mm	12	136
2004	29.5 °C22 July 2004	-35.0 °C15 January 2004	6.1 °C	877 mm	0	143
2003	32.0 °C23 June 2003	-30.2 °C15 February 2003	6.1 °C	1,129 mm	3	147
2002	32.6 °C2 July 2002	-22.7 °C9 December 2002	7.3 °C	988 mm	12	147
2001	34.3 °C9 August 2001	-23.3 °C22 February 2001	7.8 °C	855 mm	12	139
2000	29.4 °C26 June 2000	-29.4 °C23 January 2000	6.2 °C	1,104 mm	0	131
1999	31.4 °C27 June 1999	-29.0 °C14 January 1999	8.0 °C	973 mm	10	127
1998	30.2 °C15 July 1998	-28.9 °C1 January 1998	8.3 °C	1,020 mm	1	116
1997	30.6 °C1 July 1997	-29.2 °C30 January 1997	5.8 °C	1,072 mm	3	153
1996	30.8 °C6 August 1996	-28.1 °C4 February 1996	6.5 °C	1,173 mm	2	140
1995	32.9 °C14 July 1995	-27.7 °C11 January 1995	6.7 °C	1,065 mm	7	146
1994	32.6 °C18 June 1994	-33.5 °C27 January 1994	6.1 °C	986 mm	4	133
1993	31.8 °C6 July 1993	-33.3 °C7 February 1993	5.9 °C	1,159 mm	5	142
1992	29.3 °C25 August 1992	-29.3 °C16 January 1992	5.7 °C	990 mm	0	149
1991	33.1 °C20 July 1991	-26.7 °C25 January 1991	7.3 °C	929 mm	6	136
1990	31.1 °C29 July 1990	-25.5 °C26 February 1990	7.5 °C	1,181 mm	3	139
1989	32.8 °C23 June 1989	-27.6 °C7 March 1989	5.8 °C	895 mm	9	149
1988	33.6 °C9 July 1988	-29.3 °C14 January 1988	6.9 °C	886 mm	17	132
1987	33.3 °C12 July 1987	-28.6 °C14 February 1987	7.0 °C	960 mm	10	132
1986	30.5 °C25 July 1986	-25.7 °C1 February 1986	6.3 °C	1,112 mm	1	141
1985	30.9 °C10 August 1985	-27.8 °C19 December 1985	6.2 °C	866 mm	4	147
1984	30.4 °C3 August 1984	-29.6 °C27 December 1984	6.7 °C	946 mm	4	138
1983	32.5 °C15 June 1983	-31.4 °C20 December 1983	7.1 °C	1,200 mm	17	130
1982	32.2 °C18 July 1982	-31.6 °C18 January 1982	6.3 °C	918 mm	6	140
1981	32.1 °C8 July 1981	-34.3 °C4 January 1981	6.9 °C	1,099 mm	2	138
1980	31.0 °C25 June 1980	-31.8 °C25 December 1980	5.6 °C	987 mm	2	153
1979	32.2 °C25 July 1979	-30.1 °C12 February 1979	6.8 °C	948 mm	5	132
1978	31.5 °C20 July 1978	-29.1 °C5 February 1978	5.6 °C	972 mm	7	158
1977	34.5 °C20 July 1977	-26.2 °C12 December 1977	6.7 °C	1,102 mm	10	136
1976	31.3 °C5 July 1976	-32.5 °C24 January 1976	5.4 °C	1,218 mm	2	160
1975	34.7 °C1 August 1975	-27.1 °C20 December 1975	6.9 °C	1,123 mm	12	153
1974	29.6 °C10 June 1974	-30.2 °C18 January 1974	5.8 °C	1,215 mm	0	161
1973	31.7 °C8 July 1973	-28.2 °C8 January 1973	7.3 °C	1,137 mm	5	129
1972	31.3 °C12 July 1972	-29.8 °C23 February 1972	5.3 °C	1,172 mm	3	170
1971	31.2 °C30 June 1971	-32.0 °C3 February 1971	6.0 °C	932 mm	1	157
1970	31.3 °C29 July 1970	-28.9 °C20 January 1970	5.9 °C	928 mm	4	149
1969	30.7 °C27 June 1969	-27.6 °C25 December 1969	6.3 °C	1,011 mm	2	152
1968	31.9 °C18 July 1968	-32.7 °C9 January 1968	5.8 °C	865 mm	5	143
1967	30.1 °C3 June 1967	-34.1 °C13 February 1967	5.8 °C	994 mm	1	157
1966	32.7 °C3 July 1966	-28.1 °C19 February 1966	6.4 °C	833 mm	5	146
1965	29.9 °C28 June 1965	-32.1 °C15 January 1965	5.6 °C	905 mm	0	163
1964	31.7 °C28 July 1964	-26.2 °C10 February 1964	6.4 °C	831 mm	4	148
1963	32.4 °C25 July 1963	-29.0 °C4 February 1963	5.4 °C	983 mm	9	141
1962	30.1 °C8 July 1962	-31.0 °C1 February 1962	5.5 °C	1,026 mm	1	165
1961	28.9 °C4 September 1961	-26.7 °C22 January 1961	6.3 °C	1,004 mm	0	151
1960	30.4 °C29 August 1960	-26.6 °C10 January 1960	6.6 °C	866 mm	2	140
1959	32.3 °C29 July 1959	-28.5 °C9 February 1959	6.4 °C	1,067 mm	8	158
1958	29.3 °C26 July 1958	-26.5 °C11 December 1958	5.8 °C	1,046 mm	0	139
1957	30.7 °C23 June 1957	-35.9 °C15 January 1957	6.8 °C	1,027 mm	4	141
1956	30.3 °C14 June 1956	-25.2 °C1 January 1956	5.7 °C	905 mm	1	154
1955	32.9 °C8 July 1955	-30.7 °C22 December 1955	6.6 °C	843 mm	22	144
1954	28.8 °C25 August 1954	-30.2 °C13 February 1954	5.9 °C	1,344 mm	0	148
1953	33.3 °C17 July 1953	-23.4 °C2 February 1953	7.9 °C	884 mm	11	109
1952	31.6 °C7 July 1952	-28.0 °C30 January 1952	6.9 °C	1,125 mm	4	146
1951	28.8 °C9 July 1951	-30.3 °C10 February 1951	6.3 °C	1,136 mm	0	136
1950	32.0 °C10 July 1950	-29.9 °C4 March 1950	5.8 °C	1,066 mm	2	151
1949	31.6 °C29 July 1949	-22.9 °C15 January 1949	7.5 °C	970 mm	15	137
1948	32.8 °C26 August 1948	-29.5 °C19 January 1948	6.5 °C	853 mm	7	125
1947	31.6 °C14 August 1947	-26.4 °C1 January 1947	6.4 °C	1,070 mm	5	159
1946	32.6 °C29 June 1946	-30.3 °C20 January 1946	6.7 °C	1,058 mm	7	133
1945	29.2 °C7 September 1945	-24.9 °C7 January 1945	6.4 °C	1,249 mm	0	127
1944	32.5 °C15 August 1944	-24.1 °C9 February 1944	6.1 °C	880 mm	9	158
1943	30.1 °C11 July 1943	-26.6 °C22 January 1943	5.5 °C	958 mm	1	156
1942	30.2 °C22 August 1942	-30.9 °C8 January 1942	6.1 °C	1,026 mm	1	147
1941	30.5 °C1 July 1941	-27.5 °C21 December 1941	5.5 °C	914 mm	2	151
1940	28.6 °C23 July 1940	-25.6 °C9 January 1940	5.6 °C	1,079 mm	0	154

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?

Year

Across the whole year

Average daily high

11.5 °C

+0.9 °C

Hot days (≥ 30 °C)

14 d/yr

Frost days (< 0 °C)

144 d/yr

Annual rainfall

1026 mm

-11 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	-5.1 °C	+0.5 °C	45 mm	-25 mm
Feb	-4.8 °C	-0.9 °C	82 mm	+16 mm
Mar	4.2 °C	+2.3 °C	95 mm	+19 mm
Apr	10.6 °C	+1.0 °C	106 mm	+12 mm
May	17.6 °C	+0.1 °C	105 mm	+16 mm
Jun	24.5 °C	+1.6 °C	81 mm	-15 mm
Jul	27.0 °C	+1.5 °C	91 mm	-1 mm
Aug	25.4 °C	+1.1 °C	51 mm	-41 mm
Sep	21.9 °C	+2.2 °C	46 mm	-47 mm
Oct	15.4 °C	+2.6 °C	146 mm	+52 mm
Nov	3.5 °C	-1.8 °C	103 mm	+11 mm
Dec	-3.7 °C	-1.3 °C	76 mm	-11 mm

The year's extremes

Hottest day

34.3 °C

11 Aug 2025

Coldest day

-24.5 °C

2 Feb 2025

Wettest day

40.0 mm

31 Oct 2025

Windiest day

37.8 km/h

27 Jan 2025

Strongest gust

79.9 km/h

19 Dec 2025

Hottest feels-like

37.1 °C

12 Aug 2025

Coldest feels-like

-28.8 °C

2 Feb 2025

Snowiest day

17.5 cm

16 Feb 2025

Sunniest day

15.3 h

30 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Deux-Montagnes?

Deux-Montagnes has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.5 °C and it receives 1,037 mm of precipitation per year.

What is the hottest day ever recorded in Deux-Montagnes?

The hottest day measured in Deux-Montagnes between 1940 and 2025 was 1 August 1975, reaching 34.7 °C.

What is the coldest day in Deux-Montagnes?

The coldest day measured in Deux-Montagnes between 1940 and 2025 was 15 January 1957, at -35.9 °C.

Does it snow in Deux-Montagnes?

Yes. Deux-Montagnes gets on average 154.7 cm of snow per year and has around 142 frost days.

Has the climate of Deux-Montagnes warmed?

Yes: Deux-Montagnes warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Deux-Montagnes?

The wettest day measured in Deux-Montagnes between 1940 and 2025 was 9 August 2024, with 92 mm of rain in 24 hours.

What was the windiest day in Deux-Montagnes?

The windiest day measured in Deux-Montagnes between 1940 and 2025 was 25 February 1956, with winds reaching 51.3 km/h.

What is the warmest month in Deux-Montagnes?

The warmest month in Deux-Montagnes is July (21.2 °C on average); the coldest is January (-9.7 °C).

How much does it rain in Deux-Montagnes?

Deux-Montagnes receives on average 1,037 mm of precipitation per year, spread over about 137 rainy days.

Is it sunny in Deux-Montagnes?

Deux-Montagnes 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 Deux-Montagnes?

The heaviest 24-hour snowfall measured in Deux-Montagnes between 1940 and 2025 was 3 April 1975, with 32.8 cm.

Are there tropical nights in Deux-Montagnes?

Yes: Deux-Montagnes has on average 10 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Deux-Montagnes?

In Deux-Montagnes, between 1940 and 2025, the highest apparent temperature reached 39.4 °C on 1 August 1975, and the lowest was -41.1 °C on 15 January 1957.

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