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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