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Henniker CDP, New Hampshire

Official LSAD Designation: Henniker CDP • Census GEOID: 3335460 • Merrimack County

Climate Normals & Weather Observations

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

Reference Weather Station: HOPKINTON LAKE, NH US (ID: USC00274218) • Located 3.7 miles from community center • Elevation: 131.1 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 32.0° 12.5° 22.3° 3.32"
February 35.7° 11.0° 23.4° 3.07"
March 43.4° 20.1° 31.8° 3.75"
April 56.8° 31.7° 44.3° 3.85"
May 68.7° 42.8° 55.8° 3.67"
June 77.1° 52.2° 64.7° 4.48"
July 82.5° 58.0° 70.3° 4.28"
August 81.0° 55.6° 68.3° 4.01"
September 74.0° 47.2° 60.6° 4.00"
October 60.2° 36.6° 48.4° 5.43"
November 47.4° 28.2° 37.8° 3.86"
December 36.8° 19.2° 28.0° 4.31"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station HOPKINTON LAKE, NH US (ID: USC00274218) • 3.7 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 HOPKINTON LAKE, NH 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. 31.0 39.0 47.0 55.0 63.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2017: Annual mean 47.3°F 2018: Annual mean 46.7°F 2019: Annual mean 45.7°F 2020: Annual mean 48.0°F 2021: Annual mean 48.3°F 2022: Annual mean 47.3°F 2023: Annual mean 49.4°F 2024: Annual mean 49.1°F 2017: Annual mean of daily highs 57.4°F 2018: Annual mean of daily highs 57.4°F 2019: Annual mean of daily highs 57.1°F 2020: Annual mean of daily highs 59.4°F 2021: Annual mean of daily highs 58.9°F 2022: Annual mean of daily highs 59.1°F 2023: Annual mean of daily highs 59.5°F 2024: Annual mean of daily highs 60.0°F 2025: Annual mean of daily highs 58.0°F 2017: Annual mean of daily lows 37.2°F 2018: Annual mean of daily lows 36.0°F 2019: Annual mean of daily lows 34.3°F 2020: Annual mean of daily lows 36.7°F 2021: Annual mean of daily lows 37.8°F 2022: Annual mean of daily lows 35.5°F 2023: Annual mean of daily lows 39.3°F 2024: Annual mean of daily lows 38.3°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 47.3 57.4 37.2
2018 46.7 57.4 36.0
2019 45.7 57.1 34.3
2020 48.0 59.4 36.7
2021 48.3 58.9 37.8
2022 47.3 59.1 35.5
2023 49.4 59.5 39.3
2024 49.1 60.0 38.3
2025 Unavailable 58.0 Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.