Hackensack climate — normals and trends
Hackensack (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 1,140 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 (23.8 °C on average) and the coldest is January (-1.4 °C). Rainfall peaks in July.
Hackensack averages 86 frost days, 19 hot days (≥ 30 °C) and 122 rainy days per year.
Hackensack 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 97 to 75 per year over the period.
The hottest day of the period reached 39.2 °C (on 6 July 2010) and the coldest -25.2 °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
HackensackNew Jersey
- coords
- 40.89°, -74.04°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.3°C
Average daily high
15.4°C
Average daily low
7.5°C
Annual rainfall
1,140mm
Sunshine / day
8.7h
Mean relative humidity
70%
Average peak wind
16.4km/h
Seasonal range
25.2°C
Frost days (< 0 °C)
86 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
122 d/yr
Annual snowfall
75.2 cm
Average feels-like high
13.9 °C
Average feels-like low
5.1 °C
Average peak gust
36.9 km/h
Tropical nights (≥ 20 °C)
38 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.43 · p = < 0.001
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
39.2 °C
6 July 2010
Coldest day
-25.2 °C
13 February 1967
Wettest day
147 mm
16 September 1999
Windiest day
53.0 km/h
29 October 2012
Strongest gust
137.2 km/h
25 November 1950
Hottest feels-like
43.3 °C
26 June 1952
Coldest feels-like
-30.4 °C
13 February 1967
Snowiest day
32.6 cm
14 March 2017
Sunniest day
14.2 h
24 June 2021
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?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.6 °C | -0.5 °C | 32 mm | -53 mm |
| Feb | 3.6 °C | +0.1 °C | 78 mm | -2 mm |
| Mar | 11.9 °C | +3.8 °C | 107 mm | +4 mm |
| Apr | 16.2 °C | +1.7 °C | 94 mm | -4 mm |
| May | 20.0 °C | -0.2 °C | 177 mm | +75 mm |
| Jun | 26.2 °C | +0.9 °C | 61 mm | -29 mm |
| Jul | 30.0 °C | +2.0 °C | 124 mm | +16 mm |
| Aug | 26.7 °C | -0.3 °C | 37 mm | -66 mm |
| Sep | 24.7 °C | +1.6 °C | 73 mm | -20 mm |
| Oct | 17.9 °C | +0.8 °C | 109 mm | +18 mm |
| Nov | 10.7 °C | -0.1 °C | 57 mm | -35 mm |
| Dec | 3.1 °C | -1.6 °C | 75 mm | -22 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Hackensack?
Hackensack has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 1,140 mm of precipitation per year.
What is the hottest day ever recorded in Hackensack?
The hottest day measured in Hackensack between 1940 and 2025 was 6 July 2010, reaching 39.2 °C.
What is the coldest day in Hackensack?
The coldest day measured in Hackensack between 1940 and 2025 was 13 February 1967, at -25.2 °C.
Does it snow in Hackensack?
Yes. Hackensack gets on average 75.2 cm of snow per year and has around 86 frost days.
Has the climate of Hackensack warmed?
Yes: Hackensack warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hackensack?
The wettest day measured in Hackensack between 1940 and 2025 was 16 September 1999, with 147 mm of rain in 24 hours.
What was the windiest day in Hackensack?
The windiest day measured in Hackensack between 1940 and 2025 was 29 October 2012, with winds reaching 53.0 km/h.
What is the warmest month in Hackensack?
The warmest month in Hackensack is July (23.8 °C on average); the coldest is January (-1.4 °C).
How much does it rain in Hackensack?
Hackensack receives on average 1,140 mm of precipitation per year, spread over about 122 rainy days.
Is it sunny in Hackensack?
Hackensack 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 Hackensack?
The heaviest 24-hour snowfall measured in Hackensack between 1940 and 2025 was 14 March 2017, with 32.6 cm.
Are there tropical nights in Hackensack?
Yes: Hackensack has on average 38 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hackensack?
In Hackensack, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 26 June 1952, and the lowest was -30.4 °C on 13 February 1967.
Compare Hackensack with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hackensack