Millstone borough, New Jersey

Official LSAD Designation: Millstone borough • Census GEOID: 3446590 • Somerset County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Millstone borough.

Reference Weather Station: SOMERVILLE 4 NW, NJ US (ID: USC00288194) • Located 8.5 miles from community center • Elevation: 40.8 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	38.7°	19.4°	29.0°	3.55"
February	41.3°	19.5°	30.4°	2.79"
March	49.5°	27.3°	38.4°	4.11"
April	62.1°	36.3°	49.2°	3.96"
May	71.7°	46.2°	58.9°	3.44"
June	80.5°	56.3°	68.4°	4.25"
July	85.5°	61.8°	73.7°	4.68"
August	83.4°	60.0°	71.7°	3.74"
September	76.7°	53.2°	65.0°	4.26"
October	64.4°	41.0°	52.7°	4.27"
November	53.5°	31.1°	42.3°	3.20"
December	43.3°	24.4°	33.9°	4.42"

2010–2025, completed calendar years only.

NOAA station NEW BRUNSWICK 3 SE, NJ US (ID: USC00286055) • 9.3 miles from community center .

This annual reference station differs from the monthly normals station (ID: USC00288194), which has no available annual mean history.

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	55.0	65.6	44.4
2011	55.0	65.3	44.6
2012	55.9	66.2	45.6
2013	53.6	63.6	43.5
2014	52.1	62.6	41.6
2015	54.2	65.0	43.4
2016	55.5	66.2	44.7
2017	54.8	64.6	45.1
2018	54.2	63.5	44.8
2019	54.4	64.1	44.6
2020	55.9	65.4	46.3
2021	55.5	65.1	45.9
2022	54.9	65.2	44.6
2023	55.8	65.9	45.7
2024	56.2	66.4	46.1
2025	54.4	64.2	44.6

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