Weather & Climate at Naval Submarine Base New London in Groton, CT

Summary of the weather and climate in Groton, CT:

  • The average high in Groton, CT is 60.2°F and average low is 44°F
  • The hottest month is July with an high of 81°F
  • The coldest month is January with an low of 22.5°F
  • Annual rainfall is 49.68 inches. The rainiest month is March with an average of 5.07 inches.
  • Annual snowfall is 23.2 inches. The snowiest month is February with an average of 7.5 inches.

SOURCE: NOAA.GOV

Climate Table — Naval Submarine Base New London

Monthly Averages:

High (°F)Low (°F)Rainfall (inches)Snowfall (inches)
January 38.4 22.5 3.78 6
February 41 24.9 3.51 7.5
March 47.9 31.6 5.07 3
April 57.4 40.9 4.54 0.8
May 66.9 49.5 3.65 0
June 75.7 59.1 4.08 0
July 81 65.3 3.63 0
August 79.9 64.5 4.29 0
September 73.6 57.2 4.16 0
October 63.2 46 4.15 0
November 53.9 37.9 4.54 0.8
December 43.6 28.2 4.28 5.1

Climate Charts — Naval Submarine Base New London

Weather through the year:



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** Document Provided By MilBases.com **
Source: https://www.milbases.com/connecticut/naval-submarine-base-new-london/weather