The Bronx climate

Name: The Bronx
Address: US

The Bronx is warmest in July, with average highs of 29 °C, and coldest in January, when nights average -4.4 °C. March is the wettest month (108 mm) and November the driest (80 mm). Figures are 1991–2020 climate normals.

Across a full year The Bronx averages 1,127 mm of rain, 90 days above 25 °C and 89 days below freezing.

United States · 23 m elevation · population 1,385,108 · 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 -4.4 °C
Driest month November 80 mm
Wettest month March 108 mm
Least cloud October 51 % cloud
Hottest on record July 39 °C
Coldest on record February -23 °C
Warmest sea August 23 °C

What to expectThe Bronx through the year

The Bronx has a clear annual cycle: average daily highs run from 3.4 °C in January to 29 °C in July, a swing of 25 °C in mean temperature across the year.

Counted across a normal year, 90 days a year reach 25 °C, 25 of them reach 30 °C, 89 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 80 mm in November to 108 mm in March. There is no dry season to aim for.

The sea off The Bronx 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	3.4 °C	86 mm	57 %
February	4.7 °C	80 mm	56 %
March	9.0 °C	108 mm	58 %
April	15.4 °C	92 mm	60 %
May	20.8 °C	86 mm	61 %
June	25.8 °C	97 mm	58 %
July	28.8 °C	95 mm	53 %
August	27.7 °C	100 mm	52 %
September	23.8 °C	95 mm	52 %
October	17.5 °C	102 mm	51 %
November	11.4 °C	80 mm	55 %
December	6.1 °C	106 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	3.4 °C	-4.4 °C	-0.9 °C	19.9 °C	-22.6 °C	0	0	24
February	4.7 °C	-4.1 °C	-0.2 °C	23.0 °C	-22.7 °C	0	0	22
March	9.0 °C	-0.3 °C	3.9 °C	25.9 °C	-17.6 °C	0	0	17
April	15.4 °C	5.5 °C	9.9 °C	32.1 °C	-3.6 °C	1	0	2
May	20.8 °C	11.2 °C	15.6 °C	34.2 °C	0.5 °C	6	1	0
June	25.8 °C	16.8 °C	21.0 °C	36.6 °C	8.1 °C	17	5	0
July	28.8 °C	20.1 °C	24.2 °C	39.1 °C	13.3 °C	27	11	0
August	27.7 °C	19.4 °C	23.3 °C	37.8 °C	11.8 °C	25	6	0
September	23.8 °C	15.9 °C	19.6 °C	34.3 °C	6.2 °C	11	2	0
October	17.5 °C	9.8 °C	13.3 °C	32.2 °C	-0.5 °C	1	0	0
November	11.4 °C	3.9 °C	7.3 °C	23.9 °C	-8.2 °C	0	0	5
December	6.1 °C	-0.8 °C	2.3 °C	21.8 °C	-16.0 °C	0	0	18

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	86 mm	9	9.6 h/day	57 %	70 %	22 km/h	6.0 °C
February	80 mm	9	11 h/day	56 %	69 %	22 km/h	4.3 °C
March	108 mm	10	12 h/day	58 %	69 %	22 km/h	4.8 °C
April	92 mm	11	13 h/day	60 %	69 %	22 km/h	7.9 °C
May	86 mm	11	14 h/day	61 %	72 %	19 km/h	12.6 °C
June	97 mm	11	15 h/day	58 %	72 %	18 km/h	18.1 °C
July	95 mm	10	15 h/day	53 %	71 %	17 km/h	22.2 °C
August	100 mm	10	14 h/day	52 %	74 %	17 km/h	23.1 °C
September	95 mm	9	12 h/day	52 %	74 %	18 km/h	21.4 °C
October	102 mm	9	11 h/day	51 %	74 %	20 km/h	17.3 °C
November	80 mm	8	9.9 h/day	55 %	73 %	21 km/h	12.7 °C
December	106 mm	10	9.3 h/day	59 %	73 %	22 km/h	9.0 °C

How The Bronx compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
The Bronx	29 °C	-4.4 °C	1,127 mm	90
Queens · United States	28 °C	-3.3 °C	1,125 mm	84
New York City · United States	29 °C	-4.2 °C	1,129 mm	89
Newark · United States	29 °C	-4.2 °C	1,167 mm	97

Where The Bronx ranks

Ranking	Position	Value
The coolest places in North America in March	43rd of 50	9.0 °C
The coolest places in North America in February	45th of 50	4.7 °C
The coolest places in North America in January	50th of 50	3.4 °C

Planning a trip? See the best time to visit The Bronx.

QuestionsCommon questions about The Bronx’s climate

When is the best time to visit The Bronx?

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 November the driest. The month-by-month table above has the full picture.

How hot does The Bronx get?

In July, the warmest month, daily highs average 29 °C. About 25 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 -4.4 °C in January, the coldest month. A normal year has 89 nights below freezing.

Which month is wettest in The Bronx?

March, averaging 108 mm over 10 days with rain. The driest month is November with 80 mm. The year as a whole averages 1,127 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 The Bronx 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: 40.850°, -73.866° , 23 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.