Hamilton Square CDP, New Jersey

Official LSAD Designation: Hamilton Square CDP • Census GEOID: 3429370 • Mercer County

Climate Normals & Weather Observations

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

Reference Weather Station: HIGHTSTOWN 2 W, NJ US (ID: USC00283951) • Located 5.4 miles from community center • Elevation: 30.5 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	40.5°	21.4°	31.0°	3.46"
February	43.0°	22.7°	32.8°	2.61"
March	50.9°	29.7°	40.3°	4.28"
April	62.9°	39.0°	51.0°	3.67"
May	72.8°	48.4°	60.6°	4.07"
June	81.7°	57.8°	69.8°	4.63"
July	86.7°	63.0°	74.9°	4.82"
August	84.9°	60.8°	72.9°	4.29"
September	78.3°	53.8°	66.1°	4.15"
October	66.4°	42.2°	54.3°	3.98"
November	55.3°	33.0°	44.2°	3.26"
December	45.5°	26.6°	36.1°	4.23"

2010–2025, completed calendar years only.

NOAA station HIGHTSTOWN 2 W, NJ US (ID: USC00283951) • 5.4 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

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	54.9	65.4	44.3
2011	54.8	65.4	44.2
2012	55.0	66.1	44.0
2013	52.8	63.6	42.0
2014	Unavailable	Unavailable	Unavailable
2015	52.9	64.8	41.1
2016	54.2	66.3	42.1
2017	53.7	64.9	42.4
2018	53.2	64.0	42.5
2019	53.2	64.9	41.5
2020	Unavailable	66.4	Unavailable
2021	55.0	66.1	44.0
2022	54.3	66.1	42.4
2023	55.5	66.9	44.1
2024	55.8	67.2	44.4
2025	54.0	65.0	43.0

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.