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Chatham CDP, Massachusetts

Official LSAD Designation: Chatham CDP • Census GEOID: 2512960 • Barnstable County

Climate Normals & Weather Observations

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

Reference Weather Station: CHATHAM, MA US (ID: USC00191386) • Located 1.2 miles from community center • Elevation: 12.2 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 38.6° 24.9° 31.7° 3.97"
February 38.9° 25.0° 31.9° 3.84"
March 43.1° 30.7° 36.9° 4.71"
April 51.1° 39.5° 45.3° 4.01"
May 59.7° 48.1° 53.9° 3.30"
June 69.0° 56.6° 62.8° 3.17"
July 75.9° 63.1° 69.5° 2.80"
August 75.8° 62.9° 69.4° 3.20"
September 70.3° 58.4° 64.4° 3.78"
October 61.1° 48.7° 54.9° 4.31"
November 52.0° 39.6° 45.8° 4.12"
December 44.0° 31.2° 37.6° 4.72"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CHATHAM, MA US (ID: USC00191386) • 1.2 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at CHATHAM, MA US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 41.0 46.0 51.0 56.0 61.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 50.7°F 2011: Annual mean 50.8°F 2014: Annual mean 49.3°F 2015: Annual mean 50.9°F 2016: Annual mean 52.3°F 2017: Annual mean 51.1°F 2019: Annual mean 50.0°F 2020: Annual mean 51.9°F 2010: Annual mean of daily highs 56.3°F 2011: Annual mean of daily highs 56.5°F 2014: Annual mean of daily highs 55.3°F 2015: Annual mean of daily highs 57.1°F 2016: Annual mean of daily highs 58.3°F 2017: Annual mean of daily highs 57.0°F 2019: Annual mean of daily highs 56.1°F 2020: Annual mean of daily highs 57.7°F 2010: Annual mean of daily lows 45.2°F 2011: Annual mean of daily lows 45.1°F 2014: Annual mean of daily lows 43.3°F 2015: Annual mean of daily lows 44.7°F 2016: Annual mean of daily lows 46.2°F 2017: Annual mean of daily lows 45.3°F 2019: Annual mean of daily lows 43.9°F 2020: Annual mean of daily lows 46.0°F

Source: NOAA NCEI Global Summary of the Year.

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 50.7 56.3 45.2
2011 50.8 56.5 45.1
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 49.3 55.3 43.3
2015 50.9 57.1 44.7
2016 52.3 58.3 46.2
2017 51.1 57.0 45.3
2018 Unavailable Unavailable Unavailable
2019 50.0 56.1 43.9
2020 51.9 57.7 46.0
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.