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Monthly climate in Mamaroneck, New York, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Mamaroneck features a humid subtropical climate (Cfa). Temperatures typically range between 0 °C (33 °F) and 25 °C (77 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 1275 mm (50.2 inches) and receives 132 rainy days on the 1 mm (0.04 inches) threshold annually. Mamaroneck enjoys an average of 2938 hours of sunshine throughout the year, and daylight varies from 9 hours 15 minutes to 15 hours 4 minutes per day.

Monthly average temperatures in Mamaroneck, New York, United States §

The warmest months in Mamaroneck are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (71 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (33 - 38 °F) throughout the day. On average each year, Mamaroneck experiences 72 days above 25 °C (77.0 °F) and 68 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mamaroneck, New York, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 18°C
(64°F)		 20°C
(68°F)		 24°C
(76°F)		 27°C
(81°F)		 31°C
(89°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(93°F)		 33°C
(91°F)		 32°C
(90°F)		 23°C
(74°F)		 17°C
(63°F)
Mean maximum 14°C
(57°F)		 16°C
(61°F)		 19°C
(66°F)		 23°C
(73°F)		 29°C
(85°F)		 32°C
(90°F)		 35°C
(94°F)		 32°C
(90°F)		 30°C
(87°F)		 26°C
(79°F)		 21°C
(70°F)		 15°C
(59°F)
Average high 4°C
(39°F)		 5°C
(42°F)		 8°C
(48°F)		 14°C
(58°F)		 20°C
(68°F)		 25°C
(78°F)		 29°C
(84°F)		 27°C
(82°F)		 24°C
(76°F)		 19°C
(66°F)		 11°C
(52°F)		 6°C
(43°F)
Daily mean 0°C
(33°F)		 2°C
(35°F)		 5°C
(41°F)		 10°C
(51°F)		 16°C
(61°F)		 21°C
(71°F)		 25°C
(77°F)		 24°C
(75°F)		 20°C
(69°F)		 15°C
(60°F)		 8°C
(46°F)		 3°C
(38°F)
Average low -3°C
(27°F)		 -2°C
(29°F)		 1°C
(35°F)		 7°C
(44°F)		 12°C
(54°F)		 18°C
(64°F)		 22°C
(71°F)		 21°C
(70°F)		 17°C
(63°F)		 12°C
(54°F)		 4°C
(39°F)		 0°C
(32°F)
Mean minimum -13°C
(9°F)		 -12°C
(11°F)		 -6°C
(21°F)		 1°C
(34°F)		 6°C
(43°F)		 13°C
(56°F)		 17°C
(63°F)		 16°C
(62°F)		 11°C
(52°F)		 5°C
(42°F)		 -4°C
(25°F)		 -8°C
(19°F)
Minimum -18°C
(-0°F)		 -16°C
(3°F)		 -10°C
(15°F)		 -2°C
(30°F)		 2°C
(36°F)		 9°C
(49°F)		 16°C
(60°F)		 15°C
(59°F)		 8°C
(47°F)		 3°C
(38°F)		 -9°C
(15°F)		 -12°C
(11°F)

Compare climate in Mamaroneck with other places

Compare temperature, precipitation, sunshine, UV index in Mamaroneck, New York, United States with other places around the world.

Monthly average precipitation in Mamaroneck, New York, United States §

Mamaroneck usually has the most precipitation in July, August and October, with an average of 12 rainy days and 133 mm (5.2 inches) of precipitation per month. The driest months in Mamaroneck are January, June and November. On average, 82 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mamaroneck, New York, United States. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 69 (2.7) 101 (4.0) 93 (3.7) 114 (4.5) 114 (4.5) 91 (3.6) 143 (5.6) 123 (4.8) 98 (3.8) 132 (5.2) 86 (3.4) 111 (4.4)
Average precipitation days (≥ 1 mm) 8 11 10 12 12 12 13 14 9 11 9 11

Monthly sunshine hours in Mamaroneck, New York, United States §

The sunniest months in Mamaroneck are June, July and August, when the sun shines an average of 10 hours 30 minutes a day. Least sunny months in Mamaroneck: January, February and December receive an average of 5 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mamaroneck, New York, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 149 176 252 240 275 313 338 314 278 218 206 173
Mean daily daylight hours 9h 35m 10h 38m 11h 58m 13h 20m 14h 29m 15h 4m 14h 45m 13h 43m 12h 24m 11h 3m 9h 51m 9h 15m

Solar UV radiation in Mamaroneck, New York, United States §

Mamaroneck experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Mamaroneck UV Index data.

Average daily maximum UV levels by month for Mamaroneck, New York, United States. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 6 8 10 10 9 9 8 6 4 2

Detailed Monthly Weather Insights for Mamaroneck, New York, United States

Discover in-depth weather details for every month in Mamaroneck. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Mamaroneck's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.