Mastic Beach CDP, New York

Official LSAD Designation: Mastic Beach CDP • Census GEOID: 3646085 • Suffolk County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Mastic Beach CDP.

Reference Weather Station: SHIRLEY BROOKHAVEN AP, NY US (ID: USW00054790) • Located 4.2 miles from community center • Elevation: 25.0 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	39.2°	23.9°	31.6°	2.97"
February	41.0°	24.7°	32.8°	3.10"
March	47.4°	31.1°	39.3°	4.62"
April	57.7°	39.6°	48.7°	4.06"
May	67.6°	49.4°	58.5°	3.47"
June	76.6°	59.5°	68.0°	3.70"
July	82.5°	65.7°	74.1°	3.24"
August	81.2°	64.5°	72.8°	3.04"
September	74.4°	57.2°	65.8°	3.90"
October	63.9°	45.9°	54.9°	3.99"
November	53.9°	36.7°	45.3°	3.65"
December	44.5°	29.3°	36.9°	4.50"

2010–2025, completed calendar years only.

NOAA station SHIRLEY BROOKHAVEN AP, NY US (ID: USW00054790) • 4.2 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	53.6	62.1	45.2
2011	53.5	61.9	45.0
2012	Unavailable	Unavailable	Unavailable
2013	52.3	60.8	43.9
2014	51.3	60.0	42.7
2015	52.7	61.6	43.8
2016	53.7	62.7	44.8
2017	Unavailable	Unavailable	Unavailable
2018	53.1	61.1	45.1
2019	52.5	60.9	44.2
2020	55.3	63.7	46.9
2021	54.6	62.8	46.4
2022	54.0	62.8	45.2
2023	54.8	63.4	46.2
2024	54.9	63.4	46.4
2025	53.0	61.4	44.6

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.