East Setauket climate — normals and trends

Q: What is the climate of East Setauket?

East Setauket has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 11.5 °C and it receives 1,170 mm of precipitation per year.

Q: What is the hottest day ever recorded in East Setauket?

The hottest day measured in East Setauket between 1940 and 2025 was 6 July 2010, reaching 33.3 °C.

Q: What is the coldest day in East Setauket?

The coldest day measured in East Setauket between 1940 and 2025 was 14 February 2016, at -17.8 °C.

Q: Does it snow in East Setauket?

Yes. East Setauket gets on average 61.8 cm of snow per year and has around 60 frost days.

Q: Has the climate of East Setauket warmed?

Yes: East Setauket warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in East Setauket?

The wettest day measured in East Setauket between 1940 and 2025 was 14 October 2005, with 175 mm of rain in 24 hours.

Q: What was the windiest day in East Setauket?

The windiest day measured in East Setauket between 1940 and 2025 was 25 November 1950, with winds reaching 73.7 km/h.

Q: What is the warmest month in East Setauket?

The warmest month in East Setauket is July (23.1 °C on average); the coldest is January (0.3 °C).

Q: How much does it rain in East Setauket?

East Setauket receives on average 1,170 mm of precipitation per year, spread over about 118 rainy days.

Q: Is it sunny in East Setauket?

East Setauket gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

East Setauket (United States) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.5 °C and it receives 1,170 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 (23.1 °C on average) and the coldest is January (0.3 °C). Rainfall peaks in December.

East Setauket averages 60 frost days, 2 hot days (≥ 30 °C) and 118 rainy days per year.

East Setauket has warmed by +1.4 °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 70 to 50 per year over the period.

The hottest day of the period reached 33.3 °C (on 6 July 2010) and the coldest -17.8 °C (on 14 February 2016).

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

East SetauketNew York

coords: 40.94°, -73.11°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthDecemberDriest monthJune

Mean daily temperature

11.5°C

Average daily high

14.2°C

Average daily low

9.2°C

Annual rainfall

1,170mm

Sunshine / day

9.0h

Mean relative humidity

73%

Average peak wind

23.2km/h

Seasonal range

22.8°C

Frost days (< 0 °C)

60 d/yr

Hot days (≥ 30 °C)

2 d/yr

Rainy days (≥ 1 mm)

118 d/yr

Annual snowfall

61.8 cm

Average feels-like high

12.4 °C

Average feels-like low

6.1 °C

Average peak gust

39.7 km/h

Tropical nights (≥ 20 °C)

53 d/yr

Solar radiation

15.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.4 °C

since 1940

+0.2 °C per decade · r² = 0.36 · 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

33.3 °C

6 July 2010

Coldest day

-17.8 °C

14 February 2016

Wettest day

175 mm

14 October 2005

Windiest day

73.7 km/h

25 November 1950

Strongest gust

145.1 km/h

25 November 1950

Hottest feels-like

38.6 °C

2 August 1975

Coldest feels-like

-26.2 °C

23 January 1976

Snowiest day

31.4 cm

16 February 1958

Sunniest day

14.4 h

20 June 2022

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	31.7 °C24 June 2025	-10.0 °C22 January 2025	12.1 °C	1,034 mm	7	65
2024	30.4 °C1 August 2024	-8.6 °C23 December 2024	13.0 °C	1,140 mm	2	37
2023	30.1 °C28 July 2023	-15.7 °C4 February 2023	13.2 °C	1,453 mm	2	15
2022	31.8 °C9 August 2022	-10.6 °C15 January 2022	12.7 °C	1,168 mm	5	62
2021	31.2 °C27 August 2021	-9.2 °C29 January 2021	12.9 °C	1,253 mm	4	45
2020	31.2 °C28 July 2020	-8.5 °C15 February 2020	13.0 °C	1,206 mm	3	28
2019	32.7 °C21 July 2019	-14.7 °C31 January 2019	12.2 °C	1,347 mm	2	59
2018	30.8 °C6 August 2018	-14.6 °C7 January 2018	12.2 °C	1,540 mm	5	48
2017	29.7 °C20 July 2017	-9.8 °C29 December 2017	12.6 °C	1,224 mm	0	49
2016	32.0 °C14 August 2016	-17.8 °C14 February 2016	12.7 °C	974 mm	5	44
2015	29.6 °C29 July 2015	-16.7 °C16 February 2015	11.9 °C	1,044 mm	0	73
2014	27.8 °C2 September 2014	-12.2 °C7 January 2014	11.2 °C	1,155 mm	0	69
2013	32.2 °C18 July 2013	-9.4 °C23 January 2013	11.8 °C	1,039 mm	7	55
2012	32.1 °C18 July 2012	-8.6 °C15 January 2012	13.3 °C	992 mm	2	26
2011	32.7 °C22 July 2011	-14.2 °C24 January 2011	12.6 °C	1,482 mm	2	60
2010	33.3 °C6 July 2010	-10.7 °C30 January 2010	12.6 °C	1,149 mm	10	59
2009	29.3 °C10 August 2009	-12.4 °C17 January 2009	11.4 °C	1,421 mm	0	70
2008	29.8 °C19 July 2008	-10.0 °C3 January 2008	12.2 °C	1,235 mm	0	49
2007	30.2 °C8 August 2007	-11.6 °C26 January 2007	11.8 °C	1,063 mm	1	61
2006	31.4 °C3 August 2006	-8.4 °C16 January 2006	12.6 °C	1,277 mm	4	39
2005	30.4 °C3 August 2005	-12.8 °C22 January 2005	11.8 °C	1,390 mm	2	67
2004	28.1 °C2 August 2004	-16.6 °C16 January 2004	11.3 °C	1,276 mm	0	71
2003	29.6 °C26 June 2003	-13.8 °C28 January 2003	10.9 °C	1,420 mm	0	72
2002	31.2 °C4 July 2002	-5.8 °C3 December 2002	12.4 °C	1,071 mm	8	39
2001	31.7 °C9 August 2001	-9.3 °C12 February 2001	12.1 °C	953 mm	3	57
2000	28.4 °C8 August 2000	-13.2 °C17 January 2000	11.1 °C	990 mm	0	71
1999	32.8 °C5 July 1999	-10.7 °C2 January 1999	12.4 °C	1,052 mm	5	48
1998	30.4 °C22 July 1998	-8.1 °C1 January 1998	12.7 °C	1,021 mm	1	32
1997	30.2 °C17 July 1997	-14.2 °C19 January 1997	11.5 °C	1,049 mm	2	47
1996	28.0 °C2 September 1996	-14.0 °C6 January 1996	11.1 °C	1,434 mm	0	61
1995	33.0 °C15 July 1995	-12.5 °C6 February 1995	11.8 °C	995 mm	2	59
1994	30.5 °C19 June 1994	-16.3 °C19 January 1994	11.6 °C	1,217 mm	1	70
1993	33.1 °C10 July 1993	-12.2 °C7 February 1993	11.7 °C	1,143 mm	5	68
1992	28.4 °C11 August 1992	-10.3 °C10 February 1992	11.0 °C	1,146 mm	0	59
1991	32.8 °C21 July 1991	-11.1 °C22 January 1991	12.6 °C	1,234 mm	3	48
1990	29.2 °C12 August 1990	-11.7 °C26 February 1990	12.4 °C	1,264 mm	0	34
1989	29.9 °C5 August 1989	-13.0 °C23 December 1989	11.2 °C	1,445 mm	0	80
1988	31.6 °C30 July 1988	-15.2 °C14 January 1988	11.2 °C	1,029 mm	3	68
1987	30.1 °C25 July 1987	-14.8 °C15 February 1987	11.5 °C	1,159 mm	1	58
1986	31.0 °C7 July 1986	-13.4 °C15 January 1986	11.5 °C	1,123 mm	1	61
1985	29.6 °C14 August 1985	-16.8 °C21 January 1985	11.7 °C	890 mm	0	70
1984	29.1 °C16 August 1984	-12.7 °C21 January 1984	11.7 °C	1,179 mm	0	56
1983	31.6 °C16 July 1983	-11.6 °C19 January 1983	12.1 °C	1,544 mm	10	46
1982	30.3 °C19 July 1982	-16.9 °C17 January 1982	11.2 °C	1,014 mm	1	69
1981	30.6 °C9 July 1981	-15.9 °C12 January 1981	11.2 °C	1,005 mm	2	65
1980	31.4 °C21 July 1980	-16.4 °C25 December 1980	11.1 °C	871 mm	5	76
1979	30.2 °C5 August 1979	-17.4 °C14 February 1979	11.5 °C	1,379 mm	1	59
1978	30.1 °C22 July 1978	-12.5 °C4 February 1978	10.6 °C	1,271 mm	2	82
1977	31.6 °C21 July 1977	-15.3 °C17 January 1977	11.2 °C	1,465 mm	3	70
1976	29.2 °C28 July 1976	-16.9 °C23 January 1976	11.1 °C	988 mm	0	74
1975	32.1 °C2 August 1975	-10.3 °C24 December 1975	12.1 °C	1,353 mm	3	51
1974	30.3 °C9 July 1974	-11.0 °C18 January 1974	11.7 °C	1,071 mm	1	49
1973	30.4 °C31 August 1973	-11.3 °C17 February 1973	12.1 °C	1,352 mm	2	45
1972	29.6 °C23 July 1972	-12.0 °C23 February 1972	11.0 °C	1,492 mm	0	64
1971	29.5 °C9 August 1971	-13.4 °C20 January 1971	11.4 °C	1,024 mm	0	62
1970	29.6 °C2 August 1970	-14.1 °C22 January 1970	11.1 °C	983 mm	0	85
1969	29.2 °C18 July 1969	-10.5 °C28 January 1969	11.2 °C	1,233 mm	0	78
1968	30.3 °C7 August 1968	-15.6 °C9 January 1968	10.7 °C	1,049 mm	1	76
1967	27.9 °C10 July 1967	-15.5 °C13 February 1967	10.4 °C	1,156 mm	0	64
1966	29.7 °C3 July 1966	-13.7 °C20 February 1966	10.9 °C	1,019 mm	0	64
1965	29.3 °C25 July 1965	-13.2 °C15 January 1965	10.7 °C	720 mm	0	74
1964	30.7 °C1 July 1964	-11.2 °C15 January 1964	11.0 °C	967 mm	2	76
1963	29.9 °C27 July 1963	-16.1 °C8 February 1963	10.6 °C	973 mm	0	76
1962	28.7 °C8 August 1962	-15.0 °C30 December 1962	10.6 °C	1,049 mm	0	73
1961	29.1 °C4 September 1961	-17.6 °C2 February 1961	11.0 °C	1,274 mm	0	66
1960	28.4 °C3 August 1960	-10.3 °C13 December 1960	11.0 °C	1,211 mm	0	83
1959	29.6 °C29 June 1959	-13.2 °C2 February 1959	11.6 °C	1,227 mm	0	66
1958	28.1 °C16 July 1958	-15.9 °C18 February 1958	10.5 °C	1,323 mm	0	67
1957	31.7 °C17 June 1957	-16.2 °C15 January 1957	11.8 °C	965 mm	3	54
1956	30.8 °C14 June 1956	-9.4 °C2 January 1956	11.0 °C	1,078 mm	1	58
1955	31.5 °C2 August 1955	-14.6 °C3 February 1955	11.3 °C	1,341 mm	6	77
1954	29.0 °C14 July 1954	-12.6 °C13 February 1954	11.4 °C	1,281 mm	0	58
1953	31.5 °C2 September 1953	-8.5 °C2 February 1953	12.3 °C	1,348 mm	5	35
1952	31.0 °C26 June 1952	-12.6 °C30 January 1952	11.9 °C	1,132 mm	3	50
1951	29.4 °C27 July 1951	-10.6 °C9 February 1951	11.8 °C	1,202 mm	0	59
1950	28.3 °C31 July 1950	-13.0 °C21 February 1950	11.2 °C	1,133 mm	0	56
1949	31.9 °C30 July 1949	-6.9 °C30 January 1949	12.5 °C	1,006 mm	8	58
1948	32.1 °C27 August 1948	-14.9 °C31 January 1948	11.1 °C	1,188 mm	4	66
1947	30.3 °C13 August 1947	-9.5 °C5 February 1947	11.3 °C	1,076 mm	1	72
1946	28.9 °C7 July 1946	-12.1 °C20 January 1946	11.8 °C	964 mm	0	51
1945	30.2 °C30 June 1945	-16.4 °C25 January 1945	11.4 °C	1,380 mm	1	66
1944	30.9 °C5 August 1944	-8.7 °C9 January 1944	11.4 °C	1,333 mm	3	68
1943	30.3 °C25 June 1943	-15.4 °C15 February 1943	11.1 °C	1,013 mm	1	73
1942	29.2 °C19 July 1942	-15.8 °C20 December 1942	11.1 °C	1,287 mm	0	68
1941	28.8 °C2 July 1941	-10.9 °C14 January 1941	11.0 °C	972 mm	0	80
1940	30.0 °C26 July 1940	-10.9 °C3 February 1940	10.4 °C	1,240 mm	1	77

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

14.7 °C

+0.5 °C

Hot days (≥ 30 °C)

7 d/yr

Frost days (< 0 °C)

65 d/yr

Annual rainfall

1034 mm

-136 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	2.0 °C	-1.0 °C	38 mm	-59 mm
Feb	3.3 °C	0.0 °C	89 mm	-1 mm
Mar	8.9 °C	+2.4 °C	121 mm	+9 mm
Apr	12.8 °C	+1.3 °C	97 mm	-5 mm
May	17.3 °C	+0.5 °C	167 mm	+68 mm
Jun	23.4 °C	+1.2 °C	50 mm	-31 mm
Jul	27.2 °C	+1.6 °C	76 mm	-6 mm
Aug	24.6 °C	-0.6 °C	46 mm	-52 mm
Sep	22.7 °C	+0.8 °C	66 mm	-27 mm
Oct	17.2 °C	+0.5 °C	153 mm	+54 mm
Nov	11.2 °C	-0.2 °C	55 mm	-51 mm
Dec	4.6 °C	-1.5 °C	77 mm	-36 mm

The year's extremes

Hottest day

31.7 °C

24 Jun 2025

Coldest day

-10.0 °C

22 Jan 2025

Wettest day

52.0 mm

17 Mar 2025

Windiest day

57.3 km/h

19 Dec 2025

Strongest gust

94.3 km/h

13 Oct 2025

Hottest feels-like

37.0 °C

29 Jul 2025

Coldest feels-like

-15.9 °C

22 Jan 2025

Snowiest day

7.2 cm

9 Feb 2025

Sunniest day

14.3 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 East Setauket?

East Setauket has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 11.5 °C and it receives 1,170 mm of precipitation per year.

What is the hottest day ever recorded in East Setauket?

The hottest day measured in East Setauket between 1940 and 2025 was 6 July 2010, reaching 33.3 °C.

What is the coldest day in East Setauket?

The coldest day measured in East Setauket between 1940 and 2025 was 14 February 2016, at -17.8 °C.

Does it snow in East Setauket?

Yes. East Setauket gets on average 61.8 cm of snow per year and has around 60 frost days.

Has the climate of East Setauket warmed?

Yes: East Setauket warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in East Setauket?

The wettest day measured in East Setauket between 1940 and 2025 was 14 October 2005, with 175 mm of rain in 24 hours.

What was the windiest day in East Setauket?

The windiest day measured in East Setauket between 1940 and 2025 was 25 November 1950, with winds reaching 73.7 km/h.

What is the warmest month in East Setauket?

The warmest month in East Setauket is July (23.1 °C on average); the coldest is January (0.3 °C).

How much does it rain in East Setauket?

East Setauket receives on average 1,170 mm of precipitation per year, spread over about 118 rainy days.

Is it sunny in East Setauket?

East Setauket gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

What is the biggest single-day snowfall in East Setauket?

The heaviest 24-hour snowfall measured in East Setauket between 1940 and 2025 was 16 February 1958, with 31.4 cm.

Are there tropical nights in East Setauket?

Yes: East Setauket has on average 53 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in East Setauket?

In East Setauket, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 2 August 1975, and the lowest was -26.2 °C on 23 January 1976.

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