Fairhaven climate — normals and trends

Q: What is the climate of Fairhaven?

Fairhaven has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.7 °C and it receives 1,071 mm of precipitation per year.

Q: What is the hottest day ever recorded in Fairhaven?

The hottest day measured in Fairhaven between 1940 and 2025 was 5 July 1999, reaching 39.0 °C.

Q: What is the coldest day in Fairhaven?

The coldest day measured in Fairhaven between 1940 and 2025 was 13 February 1967, at -24.4 °C.

Q: Does it snow in Fairhaven?

Yes. Fairhaven gets on average 78.0 cm of snow per year and has around 89 frost days.

Q: Has the climate of Fairhaven warmed?

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

Q: What is the wettest day in Fairhaven?

The wettest day measured in Fairhaven between 1940 and 2025 was 3 September 1972, with 127 mm of rain in 24 hours.

Q: What was the windiest day in Fairhaven?

The windiest day measured in Fairhaven between 1940 and 2025 was 31 August 1954, with winds reaching 68.8 km/h.

Q: What is the warmest month in Fairhaven?

The warmest month in Fairhaven is July (22.5 °C on average); the coldest is January (-1.0 °C).

Q: How much does it rain in Fairhaven?

Fairhaven receives on average 1,071 mm of precipitation per year, spread over about 117 rainy days.

Q: Is it sunny in Fairhaven?

Fairhaven gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

Fairhaven (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.7 °C and it receives 1,071 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 (22.5 °C on average) and the coldest is January (-1.0 °C). Rainfall peaks in March.

Fairhaven averages 89 frost days, 12 hot days (≥ 30 °C) and 117 rainy days per year.

Fairhaven has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.

The number of frost days there went from about 96 to 82 per year over the period.

The hottest day of the period reached 39.0 °C (on 5 July 1999) and the coldest -24.4 °C (on 13 February 1967).

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

FairhavenMassachusetts

coords: 41.64°, -70.90°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthMarchDriest monthJuly

Mean daily temperature

10.7°C

Average daily high

14.8°C

Average daily low

6.8°C

Annual rainfall

1,071mm

Sunshine / day

8.6h

Mean relative humidity

72%

Average peak wind

18.5km/h

Seasonal range

23.5°C

Frost days (< 0 °C)

89 d/yr

Hot days (≥ 30 °C)

12 d/yr

Rainy days (≥ 1 mm)

117 d/yr

Annual snowfall

78.0 cm

Average feels-like high

13.2 °C

Average feels-like low

4.1 °C

Average peak gust

42.2 km/h

Tropical nights (≥ 20 °C)

23 d/yr

Solar radiation

14.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.37 · 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

39.0 °C

5 July 1999

Coldest day

-24.4 °C

13 February 1967

Wettest day

127 mm

3 September 1972

Windiest day

68.8 km/h

31 August 1954

Strongest gust

145.8 km/h

31 August 1954

Hottest feels-like

44.4 °C

27 August 1948

Coldest feels-like

-30.0 °C

22 January 1984

Snowiest day

38.1 cm

4 February 1961

Sunniest day

14.8 h

10 June 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.6 °C24 June 2025	-13.1 °C28 December 2025	11.2 °C	939 mm	18	100
2024	32.4 °C16 July 2024	-12.9 °C23 December 2024	11.7 °C	1,119 mm	12	75
2023	33.4 °C7 September 2023	-22.5 °C4 February 2023	12.3 °C	1,160 mm	10	64
2022	34.1 °C9 August 2022	-17.6 °C31 January 2022	12.0 °C	970 mm	18	86
2021	34.6 °C14 August 2021	-13.7 °C31 January 2021	12.1 °C	1,129 mm	20	87
2020	38.2 °C28 July 2020	-11.1 °C18 January 2020	12.0 °C	1,016 mm	19	68
2019	34.8 °C21 July 2019	-15.9 °C31 January 2019	11.1 °C	1,383 mm	10	99
2018	34.2 °C29 August 2018	-20.0 °C7 January 2018	11.5 °C	1,371 mm	21	86
2017	33.9 °C13 June 2017	-15.4 °C9 January 2017	11.5 °C	1,168 mm	7	80
2016	34.5 °C14 August 2016	-23.2 °C14 February 2016	11.7 °C	988 mm	17	82
2015	33.4 °C8 September 2015	-21.1 °C24 February 2015	11.0 °C	940 mm	13	89
2014	30.1 °C3 July 2014	-21.5 °C4 January 2014	10.4 °C	1,201 mm	2	91
2013	33.8 °C20 July 2013	-15.1 °C24 January 2013	10.9 °C	1,138 mm	16	91
2012	35.6 °C18 July 2012	-12.1 °C16 January 2012	12.3 °C	903 mm	14	65
2011	35.7 °C22 July 2011	-17.7 °C24 January 2011	11.8 °C	1,182 mm	11	85
2010	36.4 °C6 July 2010	-13.8 °C30 January 2010	12.0 °C	1,161 mm	23	82
2009	31.2 °C18 August 2009	-18.4 °C25 January 2009	10.5 °C	1,226 mm	4	91
2008	34.2 °C9 June 2008	-12.8 °C3 January 2008	11.2 °C	1,317 mm	8	92
2007	32.4 °C25 May 2007	-15.4 °C26 January 2007	10.9 °C	962 mm	8	92
2006	35.6 °C2 August 2006	-12.4 °C19 February 2006	11.8 °C	1,115 mm	6	67
2005	33.2 °C26 July 2005	-19.9 °C22 January 2005	10.7 °C	1,254 mm	19	99
2004	32.0 °C9 June 2004	-21.8 °C16 January 2004	10.4 °C	1,003 mm	2	90
2003	33.8 °C5 July 2003	-17.9 °C16 February 2003	10.3 °C	1,151 mm	13	100
2002	34.9 °C18 July 2002	-10.8 °C4 December 2002	11.3 °C	1,068 mm	22	78
2001	34.6 °C9 August 2001	-14.3 °C22 January 2001	11.3 °C	876 mm	13	82
2000	31.3 °C10 June 2000	-18.0 °C23 January 2000	10.4 °C	892 mm	4	87
1999	39.0 °C5 July 1999	-16.8 °C2 January 1999	11.6 °C	954 mm	21	82
1998	31.9 °C22 July 1998	-12.9 °C1 January 1998	11.7 °C	1,006 mm	6	59
1997	35.6 °C18 July 1997	-17.3 °C19 January 1997	10.5 °C	1,002 mm	20	99
1996	30.7 °C20 May 1996	-18.8 °C5 February 1996	10.1 °C	1,408 mm	3	90
1995	35.2 °C15 July 1995	-16.2 °C6 February 1995	10.8 °C	919 mm	19	91
1994	34.5 °C19 June 1994	-19.0 °C16 January 1994	10.9 °C	1,109 mm	16	88
1993	37.1 °C10 July 1993	-15.6 °C7 February 1993	10.8 °C	1,091 mm	17	92
1992	31.6 °C23 May 1992	-14.1 °C10 February 1992	10.1 °C	1,052 mm	9	88
1991	38.1 °C21 July 1991	-13.9 °C22 January 1991	11.8 °C	1,028 mm	24	78
1990	31.7 °C5 July 1990	-16.3 °C27 February 1990	11.6 °C	1,061 mm	7	77
1989	32.8 °C26 July 1989	-17.3 °C23 December 1989	10.3 °C	1,036 mm	13	105
1988	35.2 °C21 June 1988	-21.8 °C15 January 1988	10.6 °C	927 mm	25	90
1987	34.7 °C25 July 1987	-18.9 °C15 February 1987	10.4 °C	1,021 mm	12	95
1986	33.0 °C7 July 1986	-16.0 °C15 January 1986	10.5 °C	1,227 mm	3	90
1985	32.2 °C14 August 1985	-15.7 °C11 January 1985	10.6 °C	899 mm	6	91
1984	33.6 °C9 June 1984	-24.4 °C22 January 1984	11.0 °C	1,069 mm	13	72
1983	34.5 °C20 August 1983	-18.3 °C25 December 1983	11.3 °C	1,307 mm	30	72
1982	33.0 °C19 July 1982	-20.1 °C18 January 1982	10.4 °C	964 mm	7	89
1981	34.5 °C9 July 1981	-21.9 °C5 January 1981	10.5 °C	971 mm	10	88
1980	35.3 °C21 July 1980	-19.8 °C25 December 1980	10.3 °C	824 mm	24	101
1979	34.0 °C13 July 1979	-23.6 °C12 February 1979	10.8 °C	1,185 mm	12	76
1978	34.1 °C23 July 1978	-16.6 °C4 February 1978	9.6 °C	1,154 mm	10	104
1977	35.0 °C20 July 1977	-17.6 °C18 January 1977	10.5 °C	1,203 mm	20	86
1976	32.9 °C22 August 1976	-22.0 °C23 January 1976	10.3 °C	868 mm	11	112
1975	37.0 °C2 August 1975	-18.3 °C10 February 1975	11.0 °C	1,131 mm	12	82
1974	34.2 °C9 July 1974	-18.2 °C18 January 1974	10.5 °C	1,001 mm	11	91
1973	35.1 °C30 August 1973	-15.7 °C18 February 1973	11.3 °C	1,076 mm	20	69
1972	31.3 °C25 July 1972	-16.5 °C23 February 1972	10.0 °C	1,492 mm	7	92
1971	33.0 °C9 August 1971	-19.6 °C20 January 1971	10.5 °C	868 mm	11	94
1970	32.8 °C23 September 1970	-20.8 °C23 January 1970	10.1 °C	987 mm	10	102
1969	33.4 °C18 July 1969	-12.8 °C16 February 1969	10.3 °C	1,127 mm	11	99
1968	34.8 °C16 July 1968	-21.1 °C9 January 1968	9.9 °C	1,069 mm	11	92
1967	31.5 °C10 July 1967	-24.4 °C13 February 1967	9.5 °C	1,217 mm	2	93
1966	33.3 °C19 August 1966	-16.3 °C20 February 1966	10.1 °C	912 mm	10	93
1965	33.8 °C29 June 1965	-18.4 °C18 January 1965	9.7 °C	648 mm	10	108
1964	38.1 °C1 July 1964	-16.4 °C1 January 1964	10.0 °C	873 mm	11	95
1963	34.2 °C27 June 1963	-16.6 °C8 February 1963	9.9 °C	1,001 mm	13	96
1962	29.5 °C1 June 1962	-19.6 °C30 December 1962	9.6 °C	1,191 mm	0	96
1961	32.6 °C12 September 1961	-22.3 °C2 February 1961	10.1 °C	1,098 mm	9	94
1960	30.8 °C3 August 1960	-16.7 °C24 December 1960	10.0 °C	1,050 mm	2	109
1959	33.3 °C10 June 1959	-16.5 °C2 February 1959	10.6 °C	1,174 mm	17	95
1958	31.7 °C2 July 1958	-20.1 °C18 February 1958	9.5 °C	1,333 mm	5	85
1957	36.2 °C22 July 1957	-23.0 °C15 January 1957	10.9 °C	809 mm	14	90
1956	34.2 °C15 June 1956	-14.9 °C2 January 1956	10.0 °C	1,062 mm	9	83
1955	35.5 °C5 August 1955	-19.8 °C3 February 1955	10.3 °C	1,066 mm	19	100
1954	33.9 °C14 July 1954	-20.8 °C18 January 1954	10.5 °C	1,283 mm	6	90
1953	36.6 °C2 September 1953	-11.9 °C18 December 1953	11.5 °C	1,327 mm	17	65
1952	37.3 °C26 June 1952	-16.5 °C30 January 1952	11.1 °C	953 mm	24	89
1951	30.7 °C15 July 1951	-13.4 °C31 January 1951	10.9 °C	1,021 mm	5	81
1950	33.0 °C31 July 1950	-18.4 °C21 February 1950	10.2 °C	968 mm	6	96
1949	36.5 °C10 August 1949	-14.2 °C12 February 1949	11.6 °C	862 mm	25	82
1948	36.9 °C27 August 1948	-20.1 °C11 February 1948	9.9 °C	1,207 mm	10	92
1947	33.2 °C15 August 1947	-13.1 °C30 December 1947	10.5 °C	1,089 mm	8	105
1946	32.8 °C19 July 1946	-17.7 °C20 January 1946	11.0 °C	916 mm	4	77
1945	31.9 °C30 June 1945	-19.9 °C25 January 1945	10.5 °C	1,281 mm	5	82
1944	34.3 °C5 August 1944	-13.0 °C9 January 1944	10.6 °C	1,118 mm	24	106
1943	35.8 °C25 June 1943	-18.0 °C16 February 1943	10.3 °C	955 mm	10	109
1942	32.1 °C20 July 1942	-23.1 °C20 December 1942	10.0 °C	1,060 mm	6	102
1941	32.0 °C2 July 1941	-15.3 °C14 January 1941	10.0 °C	872 mm	5	111
1940	31.8 °C27 July 1940	-14.9 °C7 January 1940	9.4 °C	1,038 mm	6	116

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

15.3 °C

+0.5 °C

Hot days (≥ 30 °C)

18 d/yr

Frost days (< 0 °C)

100 d/yr

+11

Annual rainfall

939 mm

-132 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	2.2 °C	-0.5 °C	48 mm	-48 mm
Feb	4.0 °C	+0.3 °C	74 mm	-13 mm
Mar	9.9 °C	+2.4 °C	109 mm	+8 mm
Apr	14.8 °C	+1.7 °C	104 mm	+8 mm
May	18.8 °C	+0.2 °C	135 mm	+48 mm
Jun	25.4 °C	+1.8 °C	40 mm	-37 mm
Jul	27.7 °C	+0.8 °C	83 mm	+9 mm
Aug	25.6 °C	-0.5 °C	45 mm	-41 mm
Sep	23.2 °C	+0.9 °C	51 mm	-31 mm
Oct	17.0 °C	+0.2 °C	99 mm	+11 mm
Nov	10.6 °C	-0.4 °C	60 mm	-38 mm
Dec	3.7 °C	-1.6 °C	92 mm	-9 mm

The year's extremes

Hottest day

38.6 °C

24 Jun 2025

Coldest day

-13.1 °C

28 Dec 2025

Wettest day

54.7 mm

22 May 2025

Windiest day

44.3 km/h

19 Dec 2025

Strongest gust

112.7 km/h

19 Dec 2025

Hottest feels-like

42.9 °C

24 Jun 2025

Coldest feels-like

-18.4 °C

22 Jan 2025

Snowiest day

10.9 cm

9 Feb 2025

Sunniest day

14.8 h

11 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 Fairhaven?

Fairhaven has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.7 °C and it receives 1,071 mm of precipitation per year.

What is the hottest day ever recorded in Fairhaven?

The hottest day measured in Fairhaven between 1940 and 2025 was 5 July 1999, reaching 39.0 °C.

What is the coldest day in Fairhaven?

The coldest day measured in Fairhaven between 1940 and 2025 was 13 February 1967, at -24.4 °C.

Does it snow in Fairhaven?

Yes. Fairhaven gets on average 78.0 cm of snow per year and has around 89 frost days.

Has the climate of Fairhaven warmed?

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

What is the wettest day in Fairhaven?

The wettest day measured in Fairhaven between 1940 and 2025 was 3 September 1972, with 127 mm of rain in 24 hours.

What was the windiest day in Fairhaven?

The windiest day measured in Fairhaven between 1940 and 2025 was 31 August 1954, with winds reaching 68.8 km/h.

What is the warmest month in Fairhaven?

The warmest month in Fairhaven is July (22.5 °C on average); the coldest is January (-1.0 °C).

How much does it rain in Fairhaven?

Fairhaven receives on average 1,071 mm of precipitation per year, spread over about 117 rainy days.

Is it sunny in Fairhaven?

Fairhaven gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.

What is the biggest single-day snowfall in Fairhaven?

The heaviest 24-hour snowfall measured in Fairhaven between 1940 and 2025 was 4 February 1961, with 38.1 cm.

Are there tropical nights in Fairhaven?

Yes: Fairhaven has on average 23 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Fairhaven?

In Fairhaven, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 27 August 1948, and the lowest was -30.0 °C on 22 January 1984.

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