Skip to main content

East Dennis CDP, Massachusetts

Official LSAD Designation: East Dennis CDP • Census GEOID: 2518840 • Barnstable County

Climate Normals & Weather Observations

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

Reference Weather Station: W HARWICH, MA US (ID: USC00199227) • Located 5.4 miles from community center • Elevation: 4.6 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 37.9° 24.6° 31.3° 3.84"
February 38.0° 24.0° 31.0° 3.68"
March 43.9° 30.4° 37.2° 4.32"
April 52.0° 38.7° 45.4° 4.10"
May 61.6° 48.0° 54.8° 3.50"
June 70.6° 57.6° 64.1° 3.29"
July 77.6° 64.6° 71.1° 2.77"
August 77.5° 63.6° 70.6° 3.36"
September 71.2° 56.6° 63.9° 3.93"
October 61.5° 46.6° 54.1° 4.72"
November 52.2° 37.4° 44.8° 4.00"
December 43.4° 29.6° 36.5° 4.83"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station W HARWICH, MA US (ID: USC00199227) • 5.4 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 W HARWICH, 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) 2017: Annual mean 51.0°F 2018: Annual mean 50.8°F 2019: Annual mean 50.4°F 2020: Annual mean 52.0°F 2017: Annual mean of daily highs 57.5°F 2018: Annual mean of daily highs 57.3°F 2019: Annual mean of daily highs 57.1°F 2020: Annual mean of daily highs 58.4°F 2017: Annual mean of daily lows 44.5°F 2018: Annual mean of daily lows 44.3°F 2019: Annual mean of daily lows 43.7°F 2020: Annual mean of daily lows 45.6°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 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 Unavailable Unavailable Unavailable
2016 Unavailable Unavailable Unavailable
2017 51.0 57.5 44.5
2018 50.8 57.3 44.3
2019 50.4 57.1 43.7
2020 52.0 58.4 45.6
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.