Thomaston CDP, Connecticut

Official LSAD Designation: Thomaston CDP • Census GEOID: 0975660 • Naugatuck Valley Planning Region

Climate Normals & Weather Observations

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

Reference Weather Station: BURLINGTON, CT US (ID: USC00060973) • Located 11.2 miles from community center • Elevation: 153.9 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	36.3°	17.0°	26.6°	3.65"
February	39.1°	18.3°	28.7°	3.36"
March	46.6°	25.9°	36.3°	4.22"
April	59.5°	36.1°	47.8°	4.28"
May	70.4°	46.8°	58.6°	4.19"
June	78.5°	56.6°	67.6°	4.83"
July	83.7°	62.1°	72.9°	4.44"
August	82.0°	60.2°	71.1°	5.14"
September	75.3°	52.5°	63.9°	5.01"
October	63.3°	40.8°	52.0°	5.66"
November	52.1°	32.2°	42.2°	3.87"
December	41.4°	24.0°	32.7°	4.81"

2010–2025, completed calendar years only.

NOAA station BURLINGTON, CT US (ID: USC00060973) • 11.2 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	51.5	61.9	41.0
2011	51.2	62.0	40.5
2012	52.8	63.4	42.2
2013	49.7	60.4	39.1
2014	48.5	59.4	37.7
2015	49.7	61.0	38.4
2016	51.7	63.1	40.3
2017	50.7	61.3	40.1
2018	49.7	60.5	38.9
2019	48.0	60.0	35.9
2020	Unavailable	Unavailable	Unavailable
2021	Unavailable	Unavailable	Unavailable
2022	50.9	62.5	39.4
2023	Unavailable	Unavailable	Unavailable
2024	52.6	63.2	42.1
2025	51.0	61.1	40.9

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