Saint-Hyacinthe climate — normals and trends

Q: What is the climate of Saint-Hyacinthe?

Saint-Hyacinthe has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.3 °C and it receives 1,080 mm of precipitation per year.

Q: What is the hottest day ever recorded in Saint-Hyacinthe?

The hottest day measured in Saint-Hyacinthe between 1940 and 2025 was 1 August 1975, reaching 36.2 °C.

Q: What is the coldest day in Saint-Hyacinthe?

The coldest day measured in Saint-Hyacinthe between 1940 and 2025 was 15 January 1957, at -37.3 °C.

Q: Does it snow in Saint-Hyacinthe?

Yes. Saint-Hyacinthe gets on average 157.2 cm of snow per year and has around 153 frost days.

Q: Has the climate of Saint-Hyacinthe warmed?

Yes: Saint-Hyacinthe warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Saint-Hyacinthe?

The wettest day measured in Saint-Hyacinthe between 1940 and 2025 was 9 August 2024, with 97 mm of rain in 24 hours.

Q: What was the windiest day in Saint-Hyacinthe?

The windiest day measured in Saint-Hyacinthe between 1940 and 2025 was 1 November 2019, with winds reaching 49.9 km/h.

Q: What is the warmest month in Saint-Hyacinthe?

The warmest month in Saint-Hyacinthe is July (20.8 °C on average); the coldest is January (-10.0 °C).

Q: How much does it rain in Saint-Hyacinthe?

Saint-Hyacinthe receives on average 1,080 mm of precipitation per year, spread over about 141 rainy days.

Q: Is it sunny in Saint-Hyacinthe?

Saint-Hyacinthe gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.

Saint-Hyacinthe (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.3 °C and it receives 1,080 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 (20.8 °C on average) and the coldest is January (-10.0 °C). Rainfall peaks in July.

Saint-Hyacinthe averages 153 frost days, 8 hot days (≥ 30 °C) and 141 rainy days per year.

Saint-Hyacinthe has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The number of frost days there went from about 162 to 144 per year over the period.

The hottest day of the period reached 36.2 °C (on 1 August 1975) and the coldest -37.3 °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

Saint-HyacintheQuebec

coords: 45.63°, -72.96°
period: 1940–2025 · 86 yrs

DfbWarm-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthJulyDriest monthFebruary

Mean daily temperature

6.3°C

Average daily high

10.9°C

Average daily low

1.4°C

Annual rainfall

1,080mm

Sunshine / day

8.4h

Mean relative humidity

72%

Average peak wind

17.4km/h

Seasonal range

30.8°C

Frost days (< 0 °C)

153 d/yr

Hot days (≥ 30 °C)

8 d/yr

Rainy days (≥ 1 mm)

141 d/yr

Annual snowfall

157.2 cm

Average feels-like high

8.4 °C

Average feels-like low

-1.9 °C

Average peak gust

35.8 km/h

Tropical nights (≥ 20 °C)

7 d/yr

Solar radiation

13.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.34 · 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

36.2 °C

1 August 1975

Coldest day

-37.3 °C

15 January 1957

Wettest day

97 mm

9 August 2024

Windiest day

49.9 km/h

1 November 2019

Strongest gust

105.8 km/h

23 September 1989

Hottest feels-like

42.0 °C

1 August 1975

Coldest feels-like

-43.0 °C

15 January 1957

Snowiest day

28.6 cm

21 November 1986

Sunniest day

15.5 h

25 June 2018

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.1 °C23 June 2025	-28.2 °C2 February 2025	6.8 °C	1,083 mm	14	152
2024	33.4 °C19 June 2024	-21.1 °C19 January 2024	8.7 °C	1,207 mm	8	132
2023	33.3 °C1 June 2023	-30.4 °C4 February 2023	8.1 °C	1,411 mm	8	141
2022	31.3 °C26 June 2022	-33.3 °C22 January 2022	7.1 °C	1,272 mm	7	137
2021	33.1 °C7 June 2021	-24.2 °C31 January 2021	8.0 °C	879 mm	18	135
2020	35.8 °C27 May 2020	-26.3 °C9 February 2020	7.7 °C	1,133 mm	23	155
2019	31.6 °C4 July 2019	-26.2 °C17 January 2019	6.0 °C	1,268 mm	7	151
2018	33.9 °C2 July 2018	-31.9 °C15 January 2018	6.8 °C	1,172 mm	15	163
2017	31.2 °C11 June 2017	-28.0 °C30 December 2017	7.1 °C	1,294 mm	7	139
2016	32.3 °C20 June 2016	-28.1 °C14 February 2016	7.4 °C	1,158 mm	9	151
2015	32.0 °C7 September 2015	-29.0 °C3 February 2015	6.6 °C	967 mm	9	140
2014	31.8 °C1 July 2014	-29.7 °C22 January 2014	6.5 °C	1,026 mm	3	146
2013	33.1 °C15 July 2013	-30.0 °C17 December 2013	6.9 °C	1,030 mm	7	150
2012	33.3 °C4 August 2012	-25.9 °C15 January 2012	7.9 °C	984 mm	15	142
2011	33.1 °C21 July 2011	-31.1 °C24 January 2011	7.4 °C	1,310 mm	7	140
2010	34.2 °C7 July 2010	-21.5 °C10 December 2010	8.1 °C	1,134 mm	11	136
2009	31.1 °C17 August 2009	-33.3 °C16 January 2009	6.1 °C	1,046 mm	4	144
2008	30.7 °C8 June 2008	-28.2 °C29 February 2008	6.6 °C	1,199 mm	3	148
2007	31.8 °C2 August 2007	-26.7 °C17 January 2007	6.5 °C	1,033 mm	6	149
2006	32.9 °C1 August 2006	-20.7 °C25 February 2006	7.8 °C	1,272 mm	5	136
2005	32.2 °C27 June 2005	-27.6 °C21 January 2005	7.0 °C	1,193 mm	14	147
2004	31.4 °C22 July 2004	-28.4 °C15 January 2004	6.0 °C	945 mm	1	157
2003	33.1 °C26 June 2003	-28.9 °C13 February 2003	6.0 °C	1,109 mm	6	153
2002	33.4 °C14 August 2002	-23.6 °C9 December 2002	7.2 °C	975 mm	14	160
2001	34.8 °C9 August 2001	-24.4 °C12 February 2001	7.6 °C	838 mm	17	152
2000	29.7 °C26 June 2000	-29.4 °C18 January 2000	6.0 °C	1,151 mm	0	139
1999	32.4 °C27 June 1999	-30.7 °C14 January 1999	7.8 °C	1,015 mm	20	142
1998	31.2 °C15 July 1998	-29.4 °C1 January 1998	8.1 °C	1,054 mm	7	129
1997	31.4 °C10 June 1997	-31.9 °C30 January 1997	5.5 °C	1,068 mm	6	164
1996	30.5 °C7 August 1996	-30.3 °C7 January 1996	6.3 °C	1,245 mm	1	151
1995	34.4 °C19 June 1995	-30.1 °C11 January 1995	6.5 °C	1,101 mm	12	150
1994	33.2 °C18 June 1994	-36.6 °C27 January 1994	5.8 °C	1,143 mm	4	146
1993	33.7 °C6 July 1993	-36.2 °C7 February 1993	5.6 °C	1,121 mm	6	156
1992	30.7 °C25 August 1992	-30.6 °C17 January 1992	5.6 °C	981 mm	2	152
1991	35.0 °C20 July 1991	-27.9 °C22 January 1991	7.1 °C	976 mm	13	141
1990	31.3 °C28 July 1990	-25.8 °C18 February 1990	7.2 °C	1,285 mm	8	147
1989	32.7 °C26 July 1989	-33.4 °C30 December 1989	5.5 °C	999 mm	12	155
1988	35.4 °C3 August 1988	-28.9 °C14 January 1988	6.8 °C	863 mm	24	143
1987	33.5 °C17 August 1987	-29.8 °C14 February 1987	6.6 °C	952 mm	11	148
1986	31.7 °C25 July 1986	-28.6 °C14 January 1986	6.1 °C	1,293 mm	1	150
1985	33.4 °C25 July 1985	-31.7 °C19 December 1985	6.1 °C	910 mm	9	153
1984	31.8 °C8 June 1984	-31.1 °C12 January 1984	6.5 °C	1,012 mm	6	149
1983	32.8 °C15 June 1983	-30.8 °C21 December 1983	6.9 °C	1,301 mm	21	141
1982	33.8 °C17 July 1982	-32.1 °C18 January 1982	6.1 °C	980 mm	6	147
1981	33.5 °C8 July 1981	-35.8 °C4 January 1981	6.7 °C	1,119 mm	5	146
1980	32.4 °C25 June 1980	-31.4 °C25 December 1980	5.5 °C	1,026 mm	3	161
1979	34.0 °C25 July 1979	-31.1 °C12 February 1979	6.9 °C	960 mm	12	143
1978	33.0 °C28 May 1978	-31.0 °C5 February 1978	5.3 °C	1,006 mm	11	168
1977	35.2 °C20 July 1977	-29.6 °C12 December 1977	6.5 °C	1,106 mm	13	155
1976	31.5 °C5 July 1976	-34.8 °C11 January 1976	5.3 °C	1,390 mm	6	164
1975	36.2 °C1 August 1975	-29.8 °C19 December 1975	6.6 °C	1,152 mm	18	163
1974	29.3 °C14 July 1974	-32.0 °C18 January 1974	5.4 °C	1,239 mm	0	176
1973	32.2 °C8 July 1973	-30.3 °C8 January 1973	7.1 °C	1,291 mm	5	138
1972	31.7 °C12 July 1972	-33.3 °C23 February 1972	4.9 °C	1,203 mm	6	176
1971	33.0 °C30 June 1971	-34.6 °C3 February 1971	5.7 °C	1,001 mm	3	159
1970	32.2 °C30 July 1970	-32.9 °C20 January 1970	5.7 °C	911 mm	11	161
1969	32.0 °C27 June 1969	-26.0 °C28 January 1969	6.1 °C	1,028 mm	6	165
1968	32.4 °C18 July 1968	-33.9 °C9 January 1968	5.4 °C	915 mm	5	155
1967	31.3 °C4 June 1967	-34.6 °C13 February 1967	5.5 °C	1,002 mm	3	174
1966	33.0 °C3 July 1966	-29.8 °C19 February 1966	6.2 °C	921 mm	3	160
1965	31.9 °C28 June 1965	-32.2 °C15 January 1965	5.4 °C	881 mm	4	172
1964	32.1 °C18 July 1964	-28.6 °C10 February 1964	6.1 °C	832 mm	5	164
1963	34.3 °C25 July 1963	-31.8 °C4 February 1963	5.1 °C	1,005 mm	13	161
1962	30.3 °C18 May 1962	-34.7 °C2 February 1962	5.1 °C	1,049 mm	3	172
1961	29.7 °C23 July 1961	-29.2 °C22 January 1961	5.9 °C	1,052 mm	0	162
1960	32.1 °C29 August 1960	-31.6 °C10 January 1960	6.4 °C	975 mm	6	159
1959	32.7 °C30 July 1959	-28.9 °C9 February 1959	6.1 °C	1,091 mm	12	162
1958	29.1 °C26 July 1958	-29.4 °C11 February 1958	5.5 °C	1,088 mm	0	153
1957	31.7 °C23 June 1957	-37.3 °C15 January 1957	6.5 °C	1,132 mm	4	143
1956	31.9 °C14 June 1956	-28.8 °C2 January 1956	5.3 °C	974 mm	3	172
1955	34.3 °C9 July 1955	-32.7 °C22 December 1955	6.2 °C	889 mm	24	156
1954	29.8 °C25 August 1954	-31.6 °C23 January 1954	5.6 °C	1,380 mm	0	150
1953	34.7 °C17 July 1953	-23.7 °C2 February 1953	7.7 °C	911 mm	9	123
1952	33.2 °C23 July 1952	-30.3 °C30 January 1952	6.6 °C	1,072 mm	9	154
1951	29.6 °C20 June 1951	-33.5 °C10 February 1951	6.0 °C	1,147 mm	0	152
1950	31.4 °C10 July 1950	-31.0 °C4 March 1950	5.7 °C	1,084 mm	3	163
1949	32.8 °C27 July 1949	-27.3 °C6 February 1949	7.1 °C	989 mm	17	151
1948	33.0 °C27 August 1948	-33.3 °C10 February 1948	6.0 °C	935 mm	6	148
1947	32.6 °C14 August 1947	-27.1 °C1 January 1947	6.1 °C	1,166 mm	8	173
1946	33.2 °C30 June 1946	-31.3 °C20 January 1946	6.4 °C	1,073 mm	6	140
1945	30.7 °C30 June 1945	-27.7 °C7 January 1945	6.1 °C	1,373 mm	1	140
1944	32.5 °C11 August 1944	-26.7 °C30 December 1944	5.8 °C	916 mm	10	173
1943	30.0 °C11 July 1943	-29.2 °C22 January 1943	5.2 °C	1,072 mm	2	163
1942	31.0 °C22 August 1942	-34.0 °C8 January 1942	5.7 °C	1,069 mm	3	154
1941	31.3 °C1 July 1941	-29.8 °C21 December 1941	5.2 °C	932 mm	2	164
1940	29.2 °C23 July 1940	-26.5 °C9 January 1940	5.2 °C	1,157 mm	0	169

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

11.6 °C

+0.7 °C

Hot days (≥ 30 °C)

14 d/yr

Frost days (< 0 °C)

152 d/yr

-1

Annual rainfall

1083 mm

+3 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	-5.6 °C	+0.2 °C	51 mm	-20 mm
Feb	-5.0 °C	-1.1 °C	83 mm	+18 mm
Mar	4.7 °C	+2.5 °C	90 mm	+14 mm
Apr	11.7 °C	+1.0 °C	102 mm	+9 mm
May	18.5 °C	-0.1 °C	113 mm	+19 mm
Jun	24.6 °C	+1.2 °C	112 mm	+10 mm
Jul	26.9 °C	+1.1 °C	104 mm	-1 mm
Aug	25.7 °C	+1.2 °C	56 mm	-48 mm
Sep	22.1 °C	+2.2 °C	49 mm	-48 mm
Oct	15.5 °C	+2.6 °C	132 mm	+36 mm
Nov	3.1 °C	-2.0 °C	116 mm	+24 mm
Dec	-3.7 °C	-1.1 °C	75 mm	-11 mm

The year's extremes

Hottest day

34.1 °C

23 Jun 2025

Coldest day

-28.2 °C

2 Feb 2025

Wettest day

45.8 mm

31 Oct 2025

Windiest day

40.6 km/h

19 Dec 2025

Strongest gust

87.8 km/h

19 Dec 2025

Hottest feels-like

38.2 °C

24 Jun 2025

Coldest feels-like

-33.1 °C

2 Feb 2025

Snowiest day

17.6 cm

16 Feb 2025

Sunniest day

15.4 h

25 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 Saint-Hyacinthe?

Saint-Hyacinthe has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.3 °C and it receives 1,080 mm of precipitation per year.

What is the hottest day ever recorded in Saint-Hyacinthe?

The hottest day measured in Saint-Hyacinthe between 1940 and 2025 was 1 August 1975, reaching 36.2 °C.

What is the coldest day in Saint-Hyacinthe?

The coldest day measured in Saint-Hyacinthe between 1940 and 2025 was 15 January 1957, at -37.3 °C.

Does it snow in Saint-Hyacinthe?

Yes. Saint-Hyacinthe gets on average 157.2 cm of snow per year and has around 153 frost days.

Has the climate of Saint-Hyacinthe warmed?

Yes: Saint-Hyacinthe warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Saint-Hyacinthe?

The wettest day measured in Saint-Hyacinthe between 1940 and 2025 was 9 August 2024, with 97 mm of rain in 24 hours.

What was the windiest day in Saint-Hyacinthe?

The windiest day measured in Saint-Hyacinthe between 1940 and 2025 was 1 November 2019, with winds reaching 49.9 km/h.

What is the warmest month in Saint-Hyacinthe?

The warmest month in Saint-Hyacinthe is July (20.8 °C on average); the coldest is January (-10.0 °C).

How much does it rain in Saint-Hyacinthe?

Saint-Hyacinthe receives on average 1,080 mm of precipitation per year, spread over about 141 rainy days.

Is it sunny in Saint-Hyacinthe?

Saint-Hyacinthe gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.

What is the biggest single-day snowfall in Saint-Hyacinthe?

The heaviest 24-hour snowfall measured in Saint-Hyacinthe between 1940 and 2025 was 21 November 1986, with 28.6 cm.

Are there tropical nights in Saint-Hyacinthe?

Yes: Saint-Hyacinthe has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Saint-Hyacinthe?

In Saint-Hyacinthe, between 1940 and 2025, the highest apparent temperature reached 42.0 °C on 1 August 1975, and the lowest was -43.0 °C on 15 January 1957.

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