Parsippany climate — normals and trends

Q: What is the climate of Parsippany?

Parsippany has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 1,185 mm of precipitation per year.

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

The hottest day measured in Parsippany between 1940 and 2025 was 22 July 2011, reaching 39.3 °C.

Q: What is the coldest day in Parsippany?

The coldest day measured in Parsippany between 1940 and 2025 was 12 January 1981, at -26.4 °C.

Q: Does it snow in Parsippany?

Yes. Parsippany gets on average 74.9 cm of snow per year and has around 95 frost days.

Q: Has the climate of Parsippany warmed?

Yes: Parsippany warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Parsippany?

The wettest day measured in Parsippany between 1940 and 2025 was 16 September 1999, with 171 mm of rain in 24 hours.

Q: What was the windiest day in Parsippany?

The windiest day measured in Parsippany between 1940 and 2025 was 29 October 2012, with winds reaching 53.2 km/h.

Q: What is the warmest month in Parsippany?

The warmest month in Parsippany is July (23.7 °C on average); the coldest is January (-1.3 °C).

Q: How much does it rain in Parsippany?

Parsippany receives on average 1,185 mm of precipitation per year, spread over about 122 rainy days.

Q: Is it sunny in Parsippany?

Parsippany gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.

Parsippany (United States) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.3 °C and it receives 1,185 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 (23.7 °C on average) and the coldest is January (-1.3 °C). Rainfall peaks in July.

Parsippany averages 95 frost days, 27 hot days (≥ 30 °C) and 122 rainy days per year.

Parsippany has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.

The number of frost days there went from about 106 to 84 per year over the period.

The hottest day of the period reached 39.3 °C (on 22 July 2011) and the coldest -26.4 °C (on 12 January 1981).

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

ParsippanyNew Jersey

coords: 40.86°, -74.43°
period: 1940–2025 · 86 yrs

DfaHot-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthJulyDriest monthFebruary

Mean daily temperature

11.3°C

Average daily high

15.9°C

Average daily low

6.9°C

Annual rainfall

1,185mm

Sunshine / day

8.7h

Mean relative humidity

68%

Average peak wind

16.2km/h

Seasonal range

25.0°C

Frost days (< 0 °C)

95 d/yr

Hot days (≥ 30 °C)

27 d/yr

Rainy days (≥ 1 mm)

122 d/yr

Annual snowfall

74.9 cm

Average feels-like high

14.4 °C

Average feels-like low

4.4 °C

Average peak gust

38.2 km/h

Tropical nights (≥ 20 °C)

31 d/yr

Solar radiation

14.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.46 · 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

39.3 °C

22 July 2011

Coldest day

-26.4 °C

12 January 1981

Wettest day

171 mm

16 September 1999

Windiest day

53.2 km/h

29 October 2012

Strongest gust

139.7 km/h

25 November 1950

Hottest feels-like

44.4 °C

26 August 1948

Coldest feels-like

-32.3 °C

12 January 1981

Snowiest day

31.6 cm

14 March 2017

Sunniest day

14.2 h

19 June 2022

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	37.2 °C29 July 2025	-17.7 °C22 January 2025	12.1 °C	1,048 mm	39	97
2024	35.9 °C16 July 2024	-15.1 °C23 December 2024	12.9 °C	1,145 mm	34	68
2023	34.9 °C7 September 2023	-16.1 °C4 February 2023	13.0 °C	1,329 mm	26	68
2022	35.9 °C24 July 2022	-16.3 °C31 January 2022	12.5 °C	1,193 mm	49	96
2021	36.0 °C30 June 2021	-10.3 °C8 February 2021	12.7 °C	1,372 mm	37	85
2020	34.8 °C6 July 2020	-13.0 °C15 February 2020	12.8 °C	1,167 mm	42	65
2019	35.5 °C21 July 2019	-17.8 °C31 January 2019	12.1 °C	1,314 mm	34	102
2018	35.8 °C1 July 2018	-17.0 °C7 January 2018	12.1 °C	1,593 mm	39	93
2017	35.4 °C13 June 2017	-15.0 °C9 January 2017	12.5 °C	1,164 mm	32	81
2016	35.6 °C23 July 2016	-17.8 °C14 February 2016	12.8 °C	964 mm	53	84
2015	34.6 °C19 July 2015	-20.5 °C24 February 2015	12.1 °C	1,051 mm	43	88
2014	33.4 °C2 July 2014	-20.5 °C4 January 2014	10.9 °C	1,066 mm	26	106
2013	35.4 °C18 July 2013	-13.2 °C23 January 2013	11.5 °C	1,124 mm	25	106
2012	39.2 °C18 July 2012	-12.5 °C4 January 2012	13.1 °C	1,006 mm	42	69
2011	39.3 °C22 July 2011	-16.0 °C24 January 2011	12.5 °C	1,688 mm	34	87
2010	39.1 °C6 July 2010	-11.7 °C10 January 2010	12.8 °C	1,140 mm	63	84
2009	34.1 °C17 August 2009	-18.1 °C17 January 2009	11.4 °C	1,242 mm	21	92
2008	36.9 °C10 June 2008	-13.3 °C11 February 2008	11.8 °C	1,279 mm	32	96
2007	35.0 °C9 July 2007	-14.2 °C5 February 2007	12.0 °C	1,078 mm	36	95
2006	37.7 °C2 August 2006	-11.4 °C19 February 2006	12.7 °C	1,270 mm	40	70
2005	37.3 °C27 July 2005	-18.4 °C29 January 2005	11.9 °C	1,126 mm	51	95
2004	33.7 °C9 June 2004	-18.1 °C15 January 2004	11.4 °C	1,299 mm	19	92
2003	33.8 °C22 August 2003	-18.3 °C14 February 2003	10.6 °C	1,461 mm	19	98
2002	37.3 °C4 July 2002	-9.8 °C4 December 2002	12.3 °C	1,082 mm	48	82
2001	38.5 °C9 August 2001	-15.7 °C23 January 2001	12.1 °C	811 mm	28	90
2000	32.4 °C11 June 2000	-17.1 °C30 January 2000	10.8 °C	1,052 mm	13	94
1999	36.7 °C5 July 1999	-13.6 °C2 January 1999	12.0 °C	1,176 mm	35	87
1998	34.4 °C22 July 1998	-15.2 °C1 January 1998	12.7 °C	1,058 mm	30	66
1997	36.1 °C17 July 1997	-17.7 °C19 January 1997	11.1 °C	1,004 mm	32	99
1996	33.2 °C20 May 1996	-19.6 °C5 February 1996	10.6 °C	1,600 mm	5	88
1995	38.8 °C15 July 1995	-16.9 °C6 February 1995	11.6 °C	983 mm	35	103
1994	34.7 °C19 June 1994	-21.6 °C19 January 1994	11.3 °C	1,372 mm	22	96
1993	37.4 °C10 July 1993	-20.3 °C7 February 1993	11.4 °C	1,187 mm	42	91
1992	34.5 °C14 July 1992	-13.5 °C19 January 1992	10.7 °C	1,114 mm	14	92
1991	36.2 °C23 July 1991	-16.5 °C23 January 1991	12.4 °C	1,131 mm	44	88
1990	34.3 °C4 July 1990	-16.8 °C26 February 1990	12.4 °C	1,203 mm	15	77
1989	32.9 °C5 August 1989	-17.4 °C24 December 1989	10.7 °C	1,498 mm	21	106
1988	36.9 °C17 July 1988	-22.6 °C11 January 1988	11.0 °C	1,020 mm	46	98
1987	34.0 °C25 July 1987	-18.5 °C28 January 1987	11.2 °C	1,271 mm	33	93
1986	36.2 °C6 July 1986	-15.8 °C15 January 1986	11.3 °C	1,240 mm	22	98
1985	33.9 °C14 August 1985	-21.6 °C21 January 1985	11.4 °C	1,020 mm	13	93
1984	33.9 °C13 June 1984	-23.9 °C22 January 1984	11.1 °C	1,359 mm	18	88
1983	36.0 °C16 July 1983	-16.8 °C25 December 1983	11.6 °C	1,539 mm	51	83
1982	34.3 °C19 July 1982	-21.0 °C18 January 1982	10.8 °C	997 mm	11	103
1981	34.8 °C9 July 1981	-26.4 °C12 January 1981	11.0 °C	1,002 mm	25	96
1980	37.3 °C21 July 1980	-18.8 °C25 December 1980	10.9 °C	924 mm	43	108
1979	32.9 °C10 August 1979	-23.2 °C18 February 1979	10.9 °C	1,455 mm	12	87
1978	35.2 °C23 July 1978	-18.2 °C5 February 1978	10.0 °C	1,357 mm	18	108
1977	35.3 °C21 July 1977	-19.7 °C17 January 1977	10.9 °C	1,320 mm	27	101
1976	32.6 °C22 August 1976	-19.4 °C23 January 1976	10.6 °C	1,046 mm	21	110
1975	35.0 °C2 August 1975	-16.1 °C10 February 1975	11.6 °C	1,368 mm	12	95
1974	34.0 °C9 July 1974	-18.3 °C10 February 1974	11.2 °C	1,161 mm	19	96
1973	34.2 °C28 August 1973	-15.6 °C17 February 1973	11.7 °C	1,371 mm	23	77
1972	33.3 °C23 July 1972	-18.2 °C23 February 1972	10.5 °C	1,584 mm	20	105
1971	35.1 °C8 July 1971	-19.3 °C3 February 1971	11.2 °C	1,293 mm	25	92
1970	33.9 °C23 September 1970	-18.5 °C20 January 1970	11.0 °C	1,006 mm	31	107
1969	33.8 °C17 July 1969	-14.4 °C25 December 1969	10.8 °C	1,292 mm	15	117
1968	35.5 °C25 August 1968	-18.4 °C9 January 1968	10.8 °C	1,057 mm	36	103
1967	33.6 °C16 June 1967	-23.0 °C13 February 1967	10.2 °C	1,192 mm	12	103
1966	39.0 °C3 July 1966	-17.6 °C20 February 1966	10.8 °C	977 mm	36	99
1965	33.9 °C23 June 1965	-20.6 °C5 February 1965	10.5 °C	730 mm	29	103
1964	36.1 °C1 July 1964	-15.7 °C15 January 1964	10.9 °C	942 mm	25	106
1963	35.3 °C1 July 1963	-20.8 °C29 January 1963	10.3 °C	955 mm	20	104
1962	33.9 °C19 May 1962	-19.8 °C11 February 1962	10.1 °C	1,028 mm	22	117
1961	32.9 °C2 July 1961	-22.1 °C22 January 1961	10.6 °C	1,215 mm	23	99
1960	32.1 °C29 August 1960	-20.1 °C23 December 1960	10.3 °C	1,255 mm	9	113
1959	34.4 °C29 June 1959	-14.8 °C2 February 1959	11.6 °C	1,263 mm	38	103
1958	32.5 °C2 July 1958	-19.8 °C11 February 1958	10.0 °C	1,299 mm	13	93
1957	35.8 °C22 July 1957	-21.6 °C15 January 1957	11.5 °C	973 mm	31	88
1956	34.6 °C2 July 1956	-12.0 °C2 January 1956	10.6 °C	1,166 mm	16	97
1955	36.4 °C22 July 1955	-18.2 °C3 February 1955	11.3 °C	1,104 mm	36	107
1954	36.9 °C31 July 1954	-17.6 °C18 January 1954	11.2 °C	1,072 mm	20	102
1953	37.4 °C2 September 1953	-10.8 °C18 December 1953	12.1 °C	1,181 mm	35	78
1952	36.0 °C26 June 1952	-15.2 °C30 January 1952	11.4 °C	1,401 mm	26	90
1951	33.6 °C27 July 1951	-16.2 °C17 December 1951	11.3 °C	1,224 mm	18	90
1950	32.2 °C26 June 1950	-16.8 °C28 December 1950	10.6 °C	1,120 mm	11	109
1949	35.7 °C10 August 1949	-18.5 °C20 March 1949	12.1 °C	1,020 mm	34	87
1948	36.3 °C26 August 1948	-19.6 °C31 January 1948	10.4 °C	1,225 mm	15	101
1947	34.1 °C15 August 1947	-14.7 °C5 February 1947	10.7 °C	1,108 mm	12	111
1946	32.7 °C19 July 1946	-16.4 °C23 January 1946	11.4 °C	1,012 mm	12	84
1945	33.2 °C30 June 1945	-20.0 °C25 January 1945	10.7 °C	1,501 mm	14	98
1944	34.8 °C5 August 1944	-17.0 °C22 December 1944	10.6 °C	1,231 mm	34	118
1943	33.6 °C25 June 1943	-24.0 °C16 February 1943	10.2 °C	995 mm	24	122
1942	32.6 °C19 July 1942	-20.5 °C11 January 1942	10.5 °C	1,287 mm	5	108
1941	33.6 °C28 July 1941	-15.5 °C10 February 1941	10.7 °C	997 mm	15	113
1940	32.9 °C26 July 1940	-16.1 °C20 January 1940	9.6 °C	1,313 mm	8	114

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

16.8 °C

+0.9 °C

Hot days (≥ 30 °C)

39 d/yr

+12

Frost days (< 0 °C)

97 d/yr

Annual rainfall

1048 mm

-138 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	1.7 °C	-0.7 °C	28 mm	-60 mm
Feb	4.5 °C	+0.4 °C	88 mm	+5 mm
Mar	13.4 °C	+4.4 °C	114 mm	+8 mm
Apr	17.1 °C	+1.6 °C	104 mm	+2 mm
May	20.7 °C	-0.3 °C	180 mm	+73 mm
Jun	26.9 °C	+0.9 °C	72 mm	-26 mm
Jul	31.0 °C	+2.4 °C	135 mm	+22 mm
Aug	27.5 °C	0.0 °C	38 mm	-69 mm
Sep	25.6 °C	+2.0 °C	80 mm	-18 mm
Oct	18.5 °C	+1.0 °C	82 mm	-9 mm
Nov	11.1 °C	0.0 °C	55 mm	-39 mm
Dec	3.1 °C	-1.8 °C	73 mm	-26 mm

The year's extremes

Hottest day

37.2 °C

29 Jul 2025

Coldest day

-17.7 °C

22 Jan 2025

Wettest day

39.5 mm

30 Oct 2025

Windiest day

33.0 km/h

27 Apr 2025

Strongest gust

80.3 km/h

5 Mar 2025

Hottest feels-like

41.9 °C

23 Jun 2025

Coldest feels-like

-22.5 °C

22 Jan 2025

Snowiest day

6.9 cm

14 Dec 2025

Sunniest day

14.1 h

24 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 Parsippany?

Parsippany has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 1,185 mm of precipitation per year.

What is the hottest day ever recorded in Parsippany?

The hottest day measured in Parsippany between 1940 and 2025 was 22 July 2011, reaching 39.3 °C.

What is the coldest day in Parsippany?

The coldest day measured in Parsippany between 1940 and 2025 was 12 January 1981, at -26.4 °C.

Does it snow in Parsippany?

Yes. Parsippany gets on average 74.9 cm of snow per year and has around 95 frost days.

Has the climate of Parsippany warmed?

Yes: Parsippany warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Parsippany?

The wettest day measured in Parsippany between 1940 and 2025 was 16 September 1999, with 171 mm of rain in 24 hours.

What was the windiest day in Parsippany?

The windiest day measured in Parsippany between 1940 and 2025 was 29 October 2012, with winds reaching 53.2 km/h.

What is the warmest month in Parsippany?

The warmest month in Parsippany is July (23.7 °C on average); the coldest is January (-1.3 °C).

How much does it rain in Parsippany?

Parsippany receives on average 1,185 mm of precipitation per year, spread over about 122 rainy days.

Is it sunny in Parsippany?

Parsippany gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.

What is the biggest single-day snowfall in Parsippany?

The heaviest 24-hour snowfall measured in Parsippany between 1940 and 2025 was 14 March 2017, with 31.6 cm.

Are there tropical nights in Parsippany?

Yes: Parsippany has on average 31 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Parsippany?

In Parsippany, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 26 August 1948, and the lowest was -32.3 °C on 12 January 1981.

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