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Waterford CDP, Connecticut

Official LSAD Designation: Waterford CDP • Census GEOID: 0980210 • Southeastern Connecticut Planning Region

Climate Normals & Weather Observations

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

Reference Weather Station: GROTON NEW LONDON AP, CT US (ID: USW00014707) • Located 4.4 miles from community center • Elevation: 3.0 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 38.3° 23.3° 30.8° 2.68"
February 40.2° 24.6° 32.4° 2.20"
March 46.6° 30.7° 38.6° 3.82"
April 56.2° 39.1° 47.6° 3.58"
May 64.8° 48.8° 56.8° 3.31"
June 73.8° 58.2° 66.0° 3.30"
July 79.8° 64.8° 72.3° 3.24"
August 79.2° 63.8° 71.5° 3.32"
September 73.5° 56.9° 65.2° 3.83"
October 63.2° 45.6° 54.4° 3.66"
November 53.3° 36.8° 45.1° 3.24"
December 43.9° 29.0° 36.5° 3.13"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station GROTON NEW LONDON AP, CT US (ID: USW00014707) • 4.4 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 GROTON NEW LONDON AP, CT 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. 39.0 45.5 52.0 58.5 65.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 53.1°F 2011: Annual mean 52.0°F 2012: Annual mean 53.4°F 2013: Annual mean 51.2°F 2014: Annual mean 49.7°F 2015: Annual mean 50.6°F 2017: Annual mean 52.0°F 2018: Annual mean 51.9°F 2019: Annual mean 51.9°F 2020: Annual mean 52.4°F 2021: Annual mean 52.2°F 2023: Annual mean 54.6°F 2010: Annual mean of daily highs 61.2°F 2011: Annual mean of daily highs 60.1°F 2012: Annual mean of daily highs 61.4°F 2013: Annual mean of daily highs 59.4°F 2014: Annual mean of daily highs 58.2°F 2015: Annual mean of daily highs 59.1°F 2017: Annual mean of daily highs 60.0°F 2018: Annual mean of daily highs 59.5°F 2019: Annual mean of daily highs 59.9°F 2020: Annual mean of daily highs 60.3°F 2021: Annual mean of daily highs 60.1°F 2022: Annual mean of daily highs 61.9°F 2023: Annual mean of daily highs 62.8°F 2010: Annual mean of daily lows 45.0°F 2011: Annual mean of daily lows 43.9°F 2012: Annual mean of daily lows 45.3°F 2013: Annual mean of daily lows 42.9°F 2014: Annual mean of daily lows 41.3°F 2015: Annual mean of daily lows 42.0°F 2017: Annual mean of daily lows 44.1°F 2018: Annual mean of daily lows 44.3°F 2019: Annual mean of daily lows 43.9°F 2020: Annual mean of daily lows 44.4°F 2021: Annual mean of daily lows 44.2°F 2023: Annual mean of daily lows 46.4°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 53.1 61.2 45.0
2011 52.0 60.1 43.9
2012 53.4 61.4 45.3
2013 51.2 59.4 42.9
2014 49.7 58.2 41.3
2015 50.6 59.1 42.0
2016 Unavailable Unavailable Unavailable
2017 52.0 60.0 44.1
2018 51.9 59.5 44.3
2019 51.9 59.9 43.9
2020 52.4 60.3 44.4
2021 52.2 60.1 44.2
2022 Unavailable 61.9 Unavailable
2023 54.6 62.8 46.4
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.