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Siasconset CDP, Massachusetts

Official LSAD Designation: Siasconset CDP • Census GEOID: 2561940 • Nantucket County

Climate Normals & Weather Observations

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

Reference Weather Station: NANTUCKET MEM AP, MA US (ID: USW00014756) • Located 4.6 miles from community center • Elevation: 13.7 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 39.5° 26.6° 33.1° 3.18"
February 40.1° 27.0° 33.5° 2.84"
March 44.2° 31.5° 37.9° 3.84"
April 52.2° 38.8° 45.5° 3.60"
May 60.7° 47.0° 53.8° 2.98"
June 68.7° 55.7° 62.2° 3.00"
July 75.4° 62.6° 69.0° 2.72"
August 75.7° 62.4° 69.0° 3.00"
September 70.4° 57.0° 63.7° 3.59"
October 61.9° 48.6° 55.2° 4.39"
November 52.8° 40.0° 46.4° 3.79"
December 45.1° 32.2° 38.6° 3.93"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station NANTUCKET MEM AP, MA US (ID: USW00014756) • 4.6 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 NANTUCKET MEM AP, 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 46.8 52.5 58.3 64.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2010: Annual mean 51.5°F 2011: Annual mean 51.5°F 2012: Annual mean 53.1°F 2013: Annual mean 50.9°F 2014: Annual mean 50.3°F 2016: Annual mean 52.6°F 2017: Annual mean 51.4°F 2018: Annual mean 50.9°F 2019: Annual mean 50.6°F 2022: Annual mean 54.5°F 2023: Annual mean 52.7°F 2024: Annual mean 52.2°F 2010: Annual mean of daily highs 57.7°F 2011: Annual mean of daily highs 58.5°F 2012: Annual mean of daily highs 59.6°F 2013: Annual mean of daily highs 57.3°F 2014: Annual mean of daily highs 57.1°F 2016: Annual mean of daily highs 59.1°F 2017: Annual mean of daily highs 57.7°F 2018: Annual mean of daily highs 57.4°F 2019: Annual mean of daily highs 57.4°F 2022: Annual mean of daily highs 61.3°F 2023: Annual mean of daily highs 59.0°F 2024: Annual mean of daily highs 58.4°F 2010: Annual mean of daily lows 45.2°F 2011: Annual mean of daily lows 44.6°F 2012: Annual mean of daily lows 46.6°F 2013: Annual mean of daily lows 44.5°F 2014: Annual mean of daily lows 43.6°F 2016: Annual mean of daily lows 46.1°F 2017: Annual mean of daily lows 45.1°F 2018: Annual mean of daily lows 44.4°F 2019: Annual mean of daily lows 43.8°F 2022: Annual mean of daily lows 47.6°F 2023: Annual mean of daily lows 46.3°F 2024: Annual mean of daily lows 45.9°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 51.5 57.7 45.2
2011 51.5 58.5 44.6
2012 53.1 59.6 46.6
2013 50.9 57.3 44.5
2014 50.3 57.1 43.6
2015 Unavailable Unavailable Unavailable
2016 52.6 59.1 46.1
2017 51.4 57.7 45.1
2018 50.9 57.4 44.4
2019 50.6 57.4 43.8
2020 Unavailable Unavailable Unavailable
2021 Unavailable Unavailable Unavailable
2022 54.5 61.3 47.6
2023 52.7 59.0 46.3
2024 52.2 58.4 45.9
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.