Willimantic CDP, Connecticut

Official LSAD Designation: Willimantic CDP • Census GEOID: 0985810 • Southeastern Connecticut Planning Region

Climate Normals & Weather Observations

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

Reference Weather Station: WILLIMANTIC WINDHAM AP, CT US (ID: USW00054767) • Located 2.3 miles from community center • Elevation: 75.3 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	36.2°	18.1°	27.1°	3.20"
February	38.8°	19.4°	29.1°	2.66"
March	47.0°	27.0°	37.0°	3.95"
April	59.2°	36.7°	48.0°	3.97"
May	70.0°	46.9°	58.5°	3.40"
June	77.9°	56.1°	67.0°	3.87"
July	82.8°	61.9°	72.4°	2.66"
August	81.0°	60.3°	70.6°	4.37"
September	74.3°	52.4°	63.3°	4.11"
October	62.8°	40.8°	51.8°	3.83"
November	51.6°	31.4°	41.5°	3.55"
December	41.3°	23.8°	32.6°	3.68"

2010–2025, completed calendar years only.

NOAA station WILLIMANTIC WINDHAM AP, CT US (ID: USW00054767) • 2.3 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	51.7	62.0	41.3
2011	51.2	61.6	40.7
2012	53.2	63.5	42.9
2013	50.1	60.4	39.8
2014	49.3	59.8	38.8
2015	50.4	61.7	39.2
2016	Unavailable	Unavailable	Unavailable
2017	52.2	62.5	41.8
2018	51.5	61.2	41.8
2019	49.9	60.0	39.7
2020	52.1	62.6	41.6
2021	51.4	61.4	41.5
2022	50.9	61.7	40.0
2023	52.1	62.5	41.8
2024	51.7	62.0	41.4
2025	50.1	60.4	39.7

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