Newark climate

Name: Newark
Address: US

Newark is warmest in July, with average highs of 29 °C, and coldest in January, when nights average -4.2 °C. March is the wettest month (109 mm) and February the driest (78 mm). Figures are 1991–2020 climate normals.

Across a full year Newark averages 1,167 mm of rain, 97 days above 25 °C and 88 days below freezing.

United States · 9 m elevation · population 281,944 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month July 29 °C
Coldest month January -4.2 °C
Driest month February 78 mm
Wettest month March 109 mm
Least cloud October 51 % cloud
Hottest on record July 39 °C
Coldest on record February -24 °C
Warmest sea August 23 °C

What to expectNewark through the year

Newark has a clear annual cycle: average daily highs run from 3.8 °C in January to 29 °C in July, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 97 days a year reach 25 °C, 30 of them reach 30 °C, 88 nights drop below freezing. The warmest reading in the 1991–2020 record is 39 °C, in July.

Rain is spread fairly evenly through the year, from 78 mm in February to 109 mm in March. There is no dry season to aim for.

The sea off Newark is warmest in August at 23 °C and coldest in February at 4.3 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	3.8 °C	87 mm	58 %
February	5.3 °C	78 mm	57 %
March	9.7 °C	109 mm	59 %
April	16.2 °C	94 mm	60 %
May	21.5 °C	91 mm	61 %
June	26.4 °C	105 mm	59 %
July	29.3 °C	108 mm	55 %
August	28.1 °C	105 mm	54 %
September	24.3 °C	106 mm	53 %
October	17.9 °C	101 mm	51 %
November	11.8 °C	80 mm	55 %
December	6.4 °C	103 mm	59 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	3.8 °C	-4.2 °C	-0.7 °C	20.6 °C	-22.2 °C	0	0	24
February	5.3 °C	-3.8 °C	0.2 °C	23.4 °C	-23.7 °C	0	0	22
March	9.7 °C	0.0 °C	4.3 °C	27.7 °C	-18.8 °C	0	0	16
April	16.2 °C	5.9 °C	10.5 °C	33.2 °C	-3.3 °C	2	0	2
May	21.5 °C	11.6 °C	16.1 °C	34.2 °C	0.2 °C	8	2	0
June	26.4 °C	16.9 °C	21.4 °C	37.1 °C	8.5 °C	19	5	0
July	29.3 °C	20.1 °C	24.4 °C	39.4 °C	13.5 °C	28	12	0
August	28.1 °C	19.4 °C	23.4 °C	38.2 °C	11.7 °C	26	8	0
September	24.3 °C	15.9 °C	19.8 °C	34.7 °C	6.4 °C	13	2	0
October	17.9 °C	9.7 °C	13.4 °C	32.3 °C	-1.1 °C	2	0	0
November	11.8 °C	3.9 °C	7.4 °C	24.8 °C	-9.1 °C	0	0	6
December	6.4 °C	-0.8 °C	2.3 °C	22.3 °C	-16.2 °C	0	0	19

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	87 mm	9	9.6 h/day	58 %	69 %	19 km/h	6.0 °C
February	78 mm	8	11 h/day	57 %	67 %	19 km/h	4.3 °C
March	109 mm	10	12 h/day	59 %	67 %	20 km/h	4.8 °C
April	94 mm	11	13 h/day	60 %	67 %	19 km/h	7.9 °C
May	91 mm	12	14 h/day	61 %	71 %	17 km/h	12.6 °C
June	105 mm	12	15 h/day	59 %	71 %	16 km/h	18.1 °C
July	108 mm	11	15 h/day	55 %	70 %	15 km/h	22.2 °C
August	105 mm	11	14 h/day	54 %	73 %	14 km/h	23.1 °C
September	106 mm	9	12 h/day	53 %	74 %	15 km/h	21.4 °C
October	101 mm	9	11 h/day	51 %	73 %	17 km/h	17.3 °C
November	80 mm	8	9.9 h/day	55 %	72 %	18 km/h	12.7 °C
December	103 mm	10	9.3 h/day	59 %	72 %	18 km/h	9.0 °C

Where Newark ranks

Ranking	Position	Value
Places with the best weather in North America in May	48th of 50	86/100
Places with the best weather in North America in September	49th of 50	89/100

Planning a trip? See the best time to visit Newark.

QuestionsCommon questions about Newark’s climate

When is the best time to visit Newark?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, August, September sit closest to 20 °C on average, July is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Newark get?

In July, the warmest month, daily highs average 29 °C. About 30 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

Nights average -4.2 °C in January, the coldest month. A normal year has 88 nights below freezing.

Which month is wettest in Newark?

March, averaging 109 mm over 10 days with rain. The driest month is February with 78 mm. The year as a whole averages 1,167 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Newark rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 40.736°, -74.172° , 9 m above sea level (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.