West Chatham CDP, Massachusetts

Official LSAD Designation: West Chatham CDP • Census GEOID: 2575505 • Barnstable County

Climate Normals & Weather Observations

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

Reference Weather Station: CHATHAM MUNI AP, MA US (ID: USW00094624) • Located 0.5 miles from community center • Elevation: 20.7 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	38.6°	25.5°	32.1°	3.75"
February	39.5°	25.9°	32.7°	3.61"
March	43.9°	31.2°	37.6°	4.43"
April	52.3°	39.0°	45.6°	4.01"
May	61.9°	48.0°	55.0°	3.34"
June	71.5°	57.2°	64.3°	2.95"
July	78.7°	64.2°	71.4°	2.79"
August	77.7°	63.5°	70.6°	3.03"
September	71.1°	57.5°	64.3°	3.58"
October	61.3°	47.4°	54.3°	4.23"
November	52.1°	38.8°	45.4°	4.47"
December	43.9°	30.8°	37.3°	5.00"

2010–2025, completed calendar years only.

NOAA station CHATHAM MUNI AP, MA US (ID: USW00094624) • 0.5 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	52.4	59.1	45.6
2011	52.6	59.6	45.6
2012	53.1	60.0	46.3
2013	51.2	58.1	44.3
2014	50.3	57.3	43.4
2015	50.5	57.6	43.3
2016	52.2	59.1	45.3
2017	52.1	58.7	45.5
2018	51.8	58.5	45.2
2019	50.8	57.7	44.0
2020	53.0	59.7	46.4
2021	53.0	59.3	46.6
2022	53.8	60.6	46.9
2023	55.3	61.8	48.8
2024	Unavailable	Unavailable	Unavailable
2025	51.1	57.7	44.5

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