West Hartford climate — normals and trends

Q: What is the climate of West Hartford?

West Hartford has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.3 °C and it receives 1,106 mm of precipitation per year.

Q: What is the hottest day ever recorded in West Hartford?

The hottest day measured in West Hartford between 1940 and 2025 was 3 July 1966, reaching 39.5 °C.

Q: What is the coldest day in West Hartford?

The coldest day measured in West Hartford between 1940 and 2025 was 22 January 1984, at -29.3 °C.

Q: Does it snow in West Hartford?

Yes. West Hartford gets on average 94.2 cm of snow per year and has around 111 frost days.

Q: Has the climate of West Hartford warmed?

Yes: West Hartford warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in West Hartford?

The wettest day measured in West Hartford between 1940 and 2025 was 14 September 1944, with 133 mm of rain in 24 hours.

Q: What was the windiest day in West Hartford?

The windiest day measured in West Hartford between 1940 and 2025 was 25 November 1950, with winds reaching 48.1 km/h.

Q: What is the warmest month in West Hartford?

The warmest month in West Hartford is July (23.0 °C on average); the coldest is January (-2.6 °C).

Q: How much does it rain in West Hartford?

West Hartford receives on average 1,106 mm of precipitation per year, spread over about 120 rainy days.

Q: Is it sunny in West Hartford?

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

West Hartford (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 10.3 °C and it receives 1,106 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 (23.0 °C on average) and the coldest is January (-2.6 °C). Rainfall peaks in August.

West Hartford averages 111 frost days, 25 hot days (≥ 30 °C) and 120 rainy days per year.

West Hartford has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The number of frost days there went from about 121 to 101 per year over the period.

The hottest day of the period reached 39.5 °C (on 3 July 1966) and the coldest -29.3 °C (on 22 January 1984).

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

West HartfordConnecticut

coords: 41.76°, -72.74°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthFebruary

Mean daily temperature

10.3°C

Average daily high

15.3°C

Average daily low

5.5°C

Annual rainfall

1,106mm

Sunshine / day

8.6h

Mean relative humidity

69%

Average peak wind

15.6km/h

Seasonal range

25.6°C

Frost days (< 0 °C)

111 d/yr

Hot days (≥ 30 °C)

25 d/yr

Rainy days (≥ 1 mm)

120 d/yr

Annual snowfall

94.2 cm

Average feels-like high

13.7 °C

Average feels-like low

3.0 °C

Average peak gust

37.9 km/h

Tropical nights (≥ 20 °C)

20 d/yr

Solar radiation

14.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.41 · 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

39.5 °C

3 July 1966

Coldest day

-29.3 °C

22 January 1984

Wettest day

133 mm

14 September 1944

Windiest day

48.1 km/h

25 November 1950

Strongest gust

135.7 km/h

25 November 1950

Hottest feels-like

44.4 °C

26 June 1952

Coldest feels-like

-34.7 °C

22 January 1984

Snowiest day

31.2 cm

14 March 2017

Sunniest day

14.6 h

13 June 2008

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.5 °C24 June 2025	-23.1 °C22 January 2025	10.9 °C	1,081 mm	29	114
2024	34.9 °C20 June 2024	-14.8 °C23 December 2024	11.8 °C	1,161 mm	26	82
2023	35.3 °C7 September 2023	-21.7 °C4 February 2023	12.0 °C	1,488 mm	23	84
2022	35.6 °C24 July 2022	-21.4 °C31 January 2022	11.5 °C	1,173 mm	38	106
2021	37.7 °C30 June 2021	-16.3 °C30 January 2021	11.6 °C	1,203 mm	29	107
2020	35.8 °C27 July 2020	-14.7 °C23 January 2020	11.8 °C	1,135 mm	42	91
2019	36.1 °C21 July 2019	-20.5 °C1 February 2019	10.8 °C	1,251 mm	38	116
2018	37.4 °C1 July 2018	-22.8 °C7 January 2018	11.2 °C	1,376 mm	39	108
2017	34.8 °C12 June 2017	-21.0 °C29 December 2017	11.2 °C	1,123 mm	19	99
2016	35.4 °C22 July 2016	-25.5 °C15 February 2016	11.7 °C	918 mm	43	99
2015	35.3 °C8 September 2015	-21.2 °C24 February 2015	10.8 °C	928 mm	31	109
2014	32.7 °C2 July 2014	-25.7 °C4 January 2014	10.1 °C	986 mm	22	115
2013	36.6 °C19 July 2013	-20.3 °C17 December 2013	10.6 °C	1,049 mm	25	116
2012	39.4 °C18 July 2012	-14.3 °C22 January 2012	12.2 °C	927 mm	38	88
2011	38.9 °C22 July 2011	-21.7 °C24 January 2011	11.3 °C	1,466 mm	26	102
2010	38.4 °C7 July 2010	-14.8 °C30 January 2010	11.9 °C	1,158 mm	47	97
2009	33.7 °C17 August 2009	-22.1 °C16 January 2009	10.1 °C	1,174 mm	13	101
2008	37.8 °C10 June 2008	-15.0 °C3 January 2008	10.7 °C	1,318 mm	21	115
2007	35.3 °C2 August 2007	-16.5 °C26 January 2007	10.9 °C	959 mm	36	116
2006	37.1 °C18 July 2006	-14.7 °C16 January 2006	11.6 °C	1,154 mm	21	85
2005	36.6 °C5 August 2005	-20.7 °C29 January 2005	10.7 °C	1,291 mm	39	112
2004	33.4 °C9 June 2004	-20.9 °C16 January 2004	10.2 °C	1,136 mm	10	108
2003	32.9 °C25 June 2003	-21.4 °C28 January 2003	9.7 °C	1,312 mm	16	117
2002	36.7 °C4 July 2002	-16.5 °C4 December 2002	11.3 °C	997 mm	40	102
2001	37.2 °C9 August 2001	-17.2 °C23 January 2001	11.0 °C	839 mm	23	109
2000	32.2 °C9 May 2000	-19.6 °C15 January 2000	9.8 °C	978 mm	13	105
1999	37.5 °C5 July 1999	-21.6 °C2 January 1999	11.2 °C	1,000 mm	34	102
1998	33.7 °C22 July 1998	-14.6 °C1 January 1998	11.7 °C	952 mm	30	86
1997	35.4 °C15 July 1997	-17.9 °C19 January 1997	10.0 °C	975 mm	25	121
1996	32.4 °C20 May 1996	-21.8 °C5 February 1996	9.8 °C	1,340 mm	17	105
1995	35.9 °C14 July 1995	-23.8 °C7 February 1995	10.6 °C	1,107 mm	25	106
1994	35.6 °C7 July 1994	-24.9 °C27 January 1994	10.3 °C	1,143 mm	27	109
1993	38.9 °C10 July 1993	-18.4 °C27 February 1993	10.5 °C	1,066 mm	35	111
1992	34.7 °C23 May 1992	-15.3 °C13 February 1992	9.7 °C	1,080 mm	12	112
1991	38.3 °C20 July 1991	-17.0 °C14 January 1991	11.6 °C	1,121 mm	43	96
1990	34.8 °C3 August 1990	-21.1 °C26 February 1990	11.5 °C	1,222 mm	22	96
1989	33.1 °C5 August 1989	-24.1 °C24 December 1989	9.7 °C	1,286 mm	12	119
1988	37.3 °C11 July 1988	-23.3 °C15 January 1988	10.1 °C	984 mm	35	113
1987	35.4 °C24 July 1987	-22.8 °C28 January 1987	10.4 °C	1,032 mm	31	113
1986	35.5 °C7 July 1986	-16.9 °C15 January 1986	10.3 °C	1,137 mm	20	117
1985	34.6 °C15 August 1985	-19.7 °C4 February 1985	10.4 °C	908 mm	19	112
1984	35.6 °C13 June 1984	-29.3 °C22 January 1984	10.5 °C	1,138 mm	24	105
1983	36.4 °C16 July 1983	-19.3 °C11 February 1983	10.8 °C	1,421 mm	48	96
1982	37.0 °C18 July 1982	-22.0 °C27 January 1982	10.2 °C	911 mm	26	115
1981	35.0 °C9 July 1981	-23.1 °C13 January 1981	10.3 °C	932 mm	28	105
1980	37.5 °C21 July 1980	-21.9 °C26 December 1980	9.9 °C	839 mm	38	123
1979	34.0 °C13 July 1979	-26.7 °C18 February 1979	10.3 °C	1,347 mm	21	107
1978	37.1 °C23 July 1978	-21.7 °C4 February 1978	9.0 °C	1,137 mm	20	125
1977	38.2 °C21 July 1977	-20.3 °C13 January 1977	10.0 °C	1,296 mm	28	111
1976	34.8 °C19 April 1976	-22.4 °C23 January 1976	9.7 °C	1,002 mm	27	125
1975	38.6 °C2 August 1975	-21.3 °C10 February 1975	10.6 °C	1,306 mm	24	111
1974	35.2 °C4 July 1974	-22.3 °C18 January 1974	10.1 °C	1,084 mm	22	118
1973	34.7 °C30 August 1973	-19.4 °C1 February 1973	11.0 °C	1,290 mm	27	88
1972	32.2 °C26 August 1972	-19.2 °C8 February 1972	9.5 °C	1,488 mm	16	119
1971	34.9 °C30 June 1971	-23.8 °C1 February 1971	10.2 °C	961 mm	26	120
1970	35.5 °C15 August 1970	-19.4 °C5 February 1970	9.9 °C	855 mm	36	125
1969	34.2 °C17 July 1969	-20.1 °C25 December 1969	9.8 °C	1,199 mm	19	126
1968	36.1 °C16 July 1968	-22.9 °C9 January 1968	9.7 °C	1,061 mm	27	111
1967	33.7 °C16 June 1967	-26.7 °C13 February 1967	9.2 °C	1,111 mm	9	118
1966	39.5 °C3 July 1966	-21.6 °C20 February 1966	10.0 °C	867 mm	41	117
1965	34.3 °C23 June 1965	-23.6 °C31 January 1965	9.5 °C	702 mm	27	121
1964	37.8 °C1 July 1964	-19.2 °C1 January 1964	9.8 °C	869 mm	18	115
1963	36.0 °C26 June 1963	-22.3 °C17 February 1963	9.4 °C	899 mm	23	118
1962	34.0 °C19 May 1962	-23.2 °C11 February 1962	9.1 °C	943 mm	15	128
1961	32.9 °C13 June 1961	-28.0 °C22 January 1961	9.6 °C	1,133 mm	21	124
1960	32.4 °C29 August 1960	-18.8 °C24 December 1960	9.5 °C	1,158 mm	8	127
1959	33.8 °C15 August 1959	-18.9 °C25 February 1959	10.6 °C	1,199 mm	39	117
1958	32.7 °C2 July 1958	-21.4 °C18 February 1958	9.0 °C	1,186 mm	9	108
1957	37.0 °C22 July 1957	-25.8 °C15 January 1957	10.6 °C	882 mm	28	109
1956	35.0 °C14 June 1956	-16.8 °C18 March 1956	9.5 °C	1,002 mm	21	127
1955	37.3 °C5 August 1955	-23.2 °C3 February 1955	10.3 °C	1,351 mm	37	116
1954	35.2 °C31 July 1954	-23.3 °C14 January 1954	10.1 °C	1,226 mm	13	118
1953	39.3 °C2 September 1953	-12.0 °C18 December 1953	11.4 °C	1,270 mm	35	86
1952	37.6 °C26 June 1952	-17.3 °C30 January 1952	10.5 °C	1,150 mm	29	108
1951	32.6 °C26 July 1951	-22.5 °C10 February 1951	10.2 °C	1,155 mm	18	102
1950	32.4 °C30 July 1950	-22.7 °C4 March 1950	9.5 °C	1,063 mm	15	125
1949	37.7 °C10 August 1949	-21.4 °C10 December 1949	11.2 °C	923 mm	37	99
1948	38.4 °C27 August 1948	-24.8 °C11 February 1948	9.5 °C	1,112 mm	19	116
1947	35.2 °C13 August 1947	-18.6 °C25 December 1947	9.9 °C	1,057 mm	19	128
1946	34.3 °C19 July 1946	-17.4 °C22 February 1946	10.5 °C	970 mm	12	98
1945	32.7 °C30 June 1945	-22.1 °C25 January 1945	9.8 °C	1,309 mm	12	105
1944	33.4 °C11 August 1944	-20.7 °C17 January 1944	9.7 °C	1,253 mm	28	131
1943	34.9 °C26 June 1943	-24.4 °C16 February 1943	9.4 °C	907 mm	19	136
1942	32.0 °C19 July 1942	-26.3 °C21 December 1942	9.4 °C	1,208 mm	7	122
1941	33.5 °C2 July 1941	-18.8 °C10 February 1941	9.7 °C	888 mm	15	131
1940	34.0 °C26 July 1940	-17.3 °C27 January 1940	8.8 °C	1,117 mm	11	137

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

15.9 °C

+0.6 °C

Hot days (≥ 30 °C)

29 d/yr

Frost days (< 0 °C)

114 d/yr

Annual rainfall

1081 mm

-25 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	1.2 °C	-0.5 °C	41 mm	-44 mm
Feb	2.8 °C	-0.4 °C	76 mm	-3 mm
Mar	11.7 °C	+3.6 °C	100 mm	+1 mm
Apr	16.3 °C	+1.6 °C	83 mm	-11 mm
May	20.1 °C	-0.4 °C	218 mm	+124 mm
Jun	26.3 °C	+0.8 °C	67 mm	-24 mm
Jul	29.5 °C	+1.1 °C	116 mm	+25 mm
Aug	27.0 °C	-0.2 °C	58 mm	-44 mm
Sep	24.5 °C	+1.4 °C	80 mm	-11 mm
Oct	17.3 °C	+0.3 °C	116 mm	+24 mm
Nov	10.0 °C	-0.5 °C	50 mm	-41 mm
Dec	2.8 °C	-1.4 °C	78 mm	-19 mm

The year's extremes

Hottest day

36.5 °C

24 Jun 2025

Coldest day

-23.1 °C

22 Jan 2025

Wettest day

37.8 mm

13 Oct 2025

Windiest day

35.3 km/h

7 Mar 2025

Strongest gust

80.6 km/h

19 Dec 2025

Hottest feels-like

41.6 °C

23 Jun 2025

Coldest feels-like

-28.5 °C

22 Jan 2025

Snowiest day

9.4 cm

9 Feb 2025

Sunniest day

14.5 h

3 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 West Hartford?

West Hartford has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 10.3 °C and it receives 1,106 mm of precipitation per year.

What is the hottest day ever recorded in West Hartford?

The hottest day measured in West Hartford between 1940 and 2025 was 3 July 1966, reaching 39.5 °C.

What is the coldest day in West Hartford?

The coldest day measured in West Hartford between 1940 and 2025 was 22 January 1984, at -29.3 °C.

Does it snow in West Hartford?

Yes. West Hartford gets on average 94.2 cm of snow per year and has around 111 frost days.

Has the climate of West Hartford warmed?

Yes: West Hartford warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in West Hartford?

The wettest day measured in West Hartford between 1940 and 2025 was 14 September 1944, with 133 mm of rain in 24 hours.

What was the windiest day in West Hartford?

The windiest day measured in West Hartford between 1940 and 2025 was 25 November 1950, with winds reaching 48.1 km/h.

What is the warmest month in West Hartford?

The warmest month in West Hartford is July (23.0 °C on average); the coldest is January (-2.6 °C).

How much does it rain in West Hartford?

West Hartford receives on average 1,106 mm of precipitation per year, spread over about 120 rainy days.

Is it sunny in West Hartford?

West Hartford 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 West Hartford?

The heaviest 24-hour snowfall measured in West Hartford between 1940 and 2025 was 14 March 2017, with 31.2 cm.

Are there tropical nights in West Hartford?

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

What was the most extreme apparent temperature in West Hartford?

In West Hartford, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 26 June 1952, and the lowest was -34.7 °C on 22 January 1984.

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