East Norwalk climate — normals and trends

Q: What is the climate of East Norwalk?

East Norwalk has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.6 °C and it receives 1,105 mm of precipitation per year.

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

The hottest day measured in East Norwalk between 1940 and 2025 was 6 July 2010, reaching 37.7 °C.

Q: What is the coldest day in East Norwalk?

The coldest day measured in East Norwalk between 1940 and 2025 was 18 February 1979, at -21.5 °C.

Q: Does it snow in East Norwalk?

Yes. East Norwalk gets on average 67.6 cm of snow per year and has around 75 frost days.

Q: Has the climate of East Norwalk warmed?

Yes: East Norwalk warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in East Norwalk?

The wettest day measured in East Norwalk between 1940 and 2025 was 14 September 1944, with 141 mm of rain in 24 hours.

Q: What was the windiest day in East Norwalk?

The windiest day measured in East Norwalk between 1940 and 2025 was 29 October 2012, with winds reaching 59.5 km/h.

Q: What is the warmest month in East Norwalk?

The warmest month in East Norwalk is July (23.9 °C on average); the coldest is January (-0.8 °C).

Q: How much does it rain in East Norwalk?

East Norwalk receives on average 1,105 mm of precipitation per year, spread over about 119 rainy days.

Q: Is it sunny in East Norwalk?

East Norwalk gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

East Norwalk (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.6 °C and it receives 1,105 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 (23.9 °C on average) and the coldest is January (-0.8 °C). Rainfall peaks in March.

East Norwalk averages 75 frost days, 13 hot days (≥ 30 °C) and 119 rainy days per year.

East Norwalk has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The number of frost days there went from about 85 to 65 per year over the period.

The hottest day of the period reached 37.7 °C (on 6 July 2010) and the coldest -21.5 °C (on 18 February 1979).

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 NorwalkConnecticut

coords: 41.11°, -73.40°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthMarchDriest monthFebruary

Mean daily temperature

11.6°C

Average daily high

15.0°C

Average daily low

8.4°C

Annual rainfall

1,105mm

Sunshine / day

8.9h

Mean relative humidity

72%

Average peak wind

18.0km/h

Seasonal range

24.7°C

Frost days (< 0 °C)

75 d/yr

Hot days (≥ 30 °C)

13 d/yr

Rainy days (≥ 1 mm)

119 d/yr

Annual snowfall

67.6 cm

Average feels-like high

13.7 °C

Average feels-like low

5.9 °C

Average peak gust

38.2 km/h

Tropical nights (≥ 20 °C)

48 d/yr

Solar radiation

14.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.39 · 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

37.7 °C

6 July 2010

Coldest day

-21.5 °C

18 February 1979

Wettest day

141 mm

14 September 1944

Windiest day

59.5 km/h

29 October 2012

Strongest gust

142.9 km/h

25 November 1950

Hottest feels-like

43.0 °C

26 June 1952

Coldest feels-like

-27.5 °C

18 February 1979

Snowiest day

29.3 cm

9 February 1969

Sunniest day

14.3 h

20 June 2022

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.5 °C24 June 2025	-13.3 °C22 January 2025	12.1 °C	1,036 mm	18	79
2024	33.2 °C21 June 2024	-11.5 °C23 December 2024	13.1 °C	1,109 mm	16	53
2023	32.4 °C27 July 2023	-16.4 °C4 February 2023	13.2 °C	1,387 mm	11	34
2022	34.5 °C9 August 2022	-12.7 °C16 January 2022	12.6 °C	1,110 mm	24	77
2021	33.9 °C30 June 2021	-10.3 °C30 January 2021	12.9 °C	1,201 mm	21	63
2020	33.6 °C28 July 2020	-10.6 °C15 February 2020	13.0 °C	1,118 mm	22	44
2019	35.5 °C21 July 2019	-16.1 °C31 January 2019	12.2 °C	1,282 mm	18	79
2018	34.3 °C1 July 2018	-16.2 °C7 January 2018	12.3 °C	1,457 mm	23	72
2017	32.5 °C13 June 2017	-11.9 °C9 January 2017	12.6 °C	1,140 mm	10	59
2016	34.2 °C14 August 2016	-18.3 °C14 February 2016	12.8 °C	903 mm	23	55
2015	32.2 °C20 July 2015	-18.5 °C24 February 2015	12.1 °C	954 mm	9	76
2014	30.4 °C2 September 2014	-15.7 °C4 January 2014	11.1 °C	1,013 mm	3	84
2013	34.1 °C18 July 2013	-11.3 °C23 January 2013	11.8 °C	962 mm	16	75
2012	37.2 °C18 July 2012	-10.0 °C4 January 2012	13.3 °C	943 mm	20	37
2011	36.8 °C22 July 2011	-16.5 °C24 January 2011	12.6 °C	1,459 mm	15	71
2010	37.7 °C6 July 2010	-11.5 °C30 January 2010	12.8 °C	1,062 mm	39	74
2009	31.6 °C17 August 2009	-14.9 °C17 January 2009	11.4 °C	1,216 mm	6	81
2008	32.9 °C19 July 2008	-11.3 °C11 February 2008	12.1 °C	1,209 mm	11	72
2007	32.8 °C8 August 2007	-13.2 °C26 January 2007	12.0 °C	1,011 mm	11	77
2006	34.9 °C3 August 2006	-9.6 °C16 January 2006	12.8 °C	1,216 mm	11	49
2005	34.3 °C5 August 2005	-16.4 °C22 January 2005	11.9 °C	1,260 mm	27	83
2004	31.7 °C9 June 2004	-18.0 °C15 January 2004	11.4 °C	1,192 mm	1	81
2003	32.1 °C5 July 2003	-15.6 °C18 January 2003	10.9 °C	1,410 mm	11	85
2002	35.1 °C4 July 2002	-7.4 °C14 February 2002	12.5 °C	957 mm	26	62
2001	35.7 °C9 August 2001	-11.6 °C13 January 2001	12.2 °C	838 mm	12	68
2000	30.8 °C10 July 2000	-16.4 °C18 January 2000	11.1 °C	964 mm	4	82
1999	35.8 °C5 July 1999	-12.1 °C2 January 1999	12.4 °C	1,024 mm	21	61
1998	33.2 °C22 July 1998	-9.6 °C1 January 1998	12.9 °C	935 mm	9	34
1997	33.4 °C15 July 1997	-16.5 °C19 January 1997	11.5 °C	954 mm	14	63
1996	29.9 °C20 May 1996	-16.5 °C5 February 1996	11.0 °C	1,348 mm	0	66
1995	36.7 °C15 July 1995	-15.5 °C6 February 1995	11.9 °C	946 mm	16	76
1994	33.3 °C19 June 1994	-18.7 °C19 January 1994	11.6 °C	1,242 mm	12	78
1993	36.9 °C10 July 1993	-15.6 °C7 February 1993	11.8 °C	1,087 mm	21	77
1992	31.1 °C23 May 1992	-12.2 °C19 January 1992	11.0 °C	1,110 mm	5	76
1991	35.8 °C21 July 1991	-13.1 °C22 January 1991	12.7 °C	1,203 mm	21	62
1990	32.2 °C4 July 1990	-13.2 °C26 February 1990	12.6 °C	1,224 mm	9	55
1989	33.0 °C5 August 1989	-15.7 °C23 December 1989	11.2 °C	1,370 mm	13	98
1988	34.4 °C15 August 1988	-17.3 °C15 January 1988	11.3 °C	964 mm	27	78
1987	33.0 °C25 July 1987	-16.1 °C15 February 1987	11.6 °C	1,125 mm	18	71
1986	34.4 °C7 July 1986	-15.2 °C15 January 1986	11.6 °C	1,055 mm	7	81
1985	33.0 °C14 August 1985	-18.8 °C21 January 1985	11.7 °C	846 mm	7	82
1984	32.7 °C10 June 1984	-20.1 °C22 January 1984	11.6 °C	1,195 mm	11	67
1983	35.2 °C16 July 1983	-13.3 °C26 December 1983	12.1 °C	1,506 mm	33	60
1982	34.8 °C19 July 1982	-18.9 °C18 January 1982	11.2 °C	862 mm	11	76
1981	33.6 °C9 July 1981	-20.2 °C12 January 1981	11.3 °C	939 mm	18	80
1980	35.2 °C21 July 1980	-18.8 °C25 December 1980	11.1 °C	837 mm	23	91
1979	31.5 °C13 July 1979	-21.5 °C18 February 1979	11.4 °C	1,317 mm	9	71
1978	34.1 °C23 July 1978	-14.8 °C5 February 1978	10.4 °C	1,185 mm	7	94
1977	35.2 °C21 July 1977	-18.5 °C17 January 1977	11.3 °C	1,354 mm	15	79
1976	31.8 °C22 August 1976	-18.8 °C23 January 1976	11.0 °C	954 mm	14	90
1975	34.4 °C2 August 1975	-12.0 °C24 December 1975	12.0 °C	1,241 mm	8	67
1974	33.1 °C9 July 1974	-14.0 °C18 January 1974	11.6 °C	1,066 mm	10	71
1973	32.8 °C30 August 1973	-13.4 °C17 February 1973	12.1 °C	1,309 mm	17	54
1972	32.5 °C23 July 1972	-14.2 °C23 February 1972	10.9 °C	1,429 mm	12	76
1971	32.7 °C8 July 1971	-16.1 °C19 January 1971	11.5 °C	1,030 mm	10	73
1970	32.1 °C23 September 1970	-15.7 °C9 January 1970	11.1 °C	923 mm	10	94
1969	32.7 °C17 July 1969	-12.4 °C28 January 1969	11.2 °C	1,180 mm	8	93
1968	34.1 °C16 July 1968	-17.9 °C9 January 1968	10.9 °C	956 mm	18	84
1967	30.0 °C16 June 1967	-19.7 °C13 February 1967	10.4 °C	1,093 mm	1	85
1966	35.8 °C3 July 1966	-15.7 °C20 February 1966	11.0 °C	977 mm	18	77
1965	32.5 °C25 July 1965	-16.2 °C15 January 1965	10.7 °C	726 mm	5	86
1964	34.9 °C1 July 1964	-14.9 °C15 January 1964	11.0 °C	893 mm	8	86
1963	33.9 °C1 July 1963	-17.7 °C8 February 1963	10.6 °C	934 mm	15	92
1962	31.2 °C19 May 1962	-18.0 °C11 February 1962	10.4 °C	929 mm	5	90
1961	31.5 °C1 September 1961	-20.3 °C2 February 1961	10.9 °C	1,207 mm	11	79
1960	30.2 °C29 August 1960	-15.0 °C28 December 1960	10.8 °C	1,145 mm	2	99
1959	32.4 °C29 June 1959	-14.2 °C2 February 1959	11.8 °C	1,171 mm	19	84
1958	31.5 °C2 July 1958	-17.2 °C18 February 1958	10.4 °C	1,245 mm	3	76
1957	35.2 °C22 July 1957	-19.6 °C15 January 1957	11.8 °C	844 mm	19	70
1956	33.3 °C14 June 1956	-12.1 °C2 January 1956	11.0 °C	1,005 mm	12	71
1955	34.5 °C2 August 1955	-16.9 °C3 February 1955	11.5 °C	1,179 mm	22	87
1954	33.3 °C14 July 1954	-15.4 °C18 January 1954	11.4 °C	1,155 mm	8	72
1953	36.3 °C2 September 1953	-9.2 °C2 February 1953	12.5 °C	1,208 mm	22	49
1952	35.5 °C26 June 1952	-14.1 °C30 January 1952	11.9 °C	1,114 mm	19	61
1951	32.7 °C27 July 1951	-12.1 °C9 February 1951	11.7 °C	1,134 mm	7	72
1950	31.2 °C26 June 1950	-15.5 °C4 March 1950	11.0 °C	1,055 mm	5	71
1949	34.8 °C10 August 1949	-8.6 °C20 March 1949	12.5 °C	996 mm	24	70
1948	35.2 °C27 August 1948	-18.1 °C31 January 1948	10.9 °C	1,113 mm	9	83
1947	33.3 °C15 August 1947	-11.6 °C5 February 1947	11.2 °C	1,030 mm	8	91
1946	31.2 °C19 July 1946	-14.3 °C20 January 1946	11.8 °C	904 mm	4	64
1945	32.4 °C30 June 1945	-19.2 °C25 January 1945	11.1 °C	1,331 mm	2	78
1944	32.6 °C5 August 1944	-12.6 °C9 January 1944	11.0 °C	1,275 mm	20	92
1943	33.6 °C25 June 1943	-17.6 °C15 February 1943	10.7 °C	951 mm	12	95
1942	31.9 °C19 July 1942	-19.1 °C21 December 1942	10.9 °C	1,204 mm	3	88
1941	33.1 °C2 July 1941	-13.4 °C10 February 1941	11.1 °C	894 mm	6	95
1940	32.6 °C26 July 1940	-13.6 °C20 January 1940	10.1 °C	1,150 mm	6	96

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

15.6 °C

+0.6 °C

Hot days (≥ 30 °C)

18 d/yr

Frost days (< 0 °C)

79 d/yr

Annual rainfall

1036 mm

-69 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	1.7 °C	-0.7 °C	33 mm	-52 mm
Feb	3.4 °C	0.0 °C	77 mm	-4 mm
Mar	10.7 °C	+3.2 °C	109 mm	+7 mm
Apr	15.1 °C	+1.6 °C	87 mm	-8 mm
May	19.2 °C	0.0 °C	165 mm	+69 mm
Jun	25.5 °C	+1.0 °C	49 mm	-34 mm
Jul	28.9 °C	+1.4 °C	103 mm	+10 mm
Aug	26.0 °C	-0.5 °C	43 mm	-57 mm
Sep	23.7 °C	+1.0 °C	78 mm	-10 mm
Oct	17.5 °C	+0.5 °C	158 mm	+68 mm
Nov	10.8 °C	-0.3 °C	59 mm	-35 mm
Dec	3.7 °C	-1.5 °C	75 mm	-23 mm

The year's extremes

Hottest day

35.5 °C

24 Jun 2025

Coldest day

-13.3 °C

22 Jan 2025

Wettest day

76.9 mm

30 Oct 2025

Windiest day

37.1 km/h

19 Dec 2025

Strongest gust

90.4 km/h

5 Mar 2025

Hottest feels-like

40.7 °C

24 Jun 2025

Coldest feels-like

-18.3 °C

22 Jan 2025

Snowiest day

7.1 cm

14 Dec 2025

Sunniest day

14.2 h

20 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 Norwalk?

East Norwalk has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.6 °C and it receives 1,105 mm of precipitation per year.

What is the hottest day ever recorded in East Norwalk?

The hottest day measured in East Norwalk between 1940 and 2025 was 6 July 2010, reaching 37.7 °C.

What is the coldest day in East Norwalk?

The coldest day measured in East Norwalk between 1940 and 2025 was 18 February 1979, at -21.5 °C.

Does it snow in East Norwalk?

Yes. East Norwalk gets on average 67.6 cm of snow per year and has around 75 frost days.

Has the climate of East Norwalk warmed?

Yes: East Norwalk warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in East Norwalk?

The wettest day measured in East Norwalk between 1940 and 2025 was 14 September 1944, with 141 mm of rain in 24 hours.

What was the windiest day in East Norwalk?

The windiest day measured in East Norwalk between 1940 and 2025 was 29 October 2012, with winds reaching 59.5 km/h.

What is the warmest month in East Norwalk?

The warmest month in East Norwalk is July (23.9 °C on average); the coldest is January (-0.8 °C).

How much does it rain in East Norwalk?

East Norwalk receives on average 1,105 mm of precipitation per year, spread over about 119 rainy days.

Is it sunny in East Norwalk?

East Norwalk gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.

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

The heaviest 24-hour snowfall measured in East Norwalk between 1940 and 2025 was 9 February 1969, with 29.3 cm.

Are there tropical nights in East Norwalk?

Yes: East Norwalk has on average 48 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in East Norwalk?

In East Norwalk, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 26 June 1952, and the lowest was -27.5 °C on 18 February 1979.

Compare East Norwalk with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around East Norwalk

Other cities — United States

All cities in United States →