Weather information for the New London-Groton area is provided below. Average temperatures, climate details and current forecasts are included.
Climate
Monthly average temperatures and precipitation for New London / Groton are shown below.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| Avg. High | 36° | 38° | 46° | 56° | 66° | 75° | 80° | 78° | 74° | 64° | 52° | 41° |
| Avg. Low | 18° | 20° | 28° | 37° | 46° | 55° | 62° | 61° | 54° | 44° | 34° | 24° |
| Daily Avg | 28° | 28° | 38° | 47° | 56° | 65° | 71° | 71° | 64° | 54° | 44° | 34° |
| Avg. Precip. | 4.3 in | 3.8 in | 4.3 in | 4.3 in | 4.1 in | 3.5 in | 3.3 in | 3.7 in | 3.6 in | 3.9 in | 4.9 in | 4.7 in |
| Note: All temperatures are in degrees Fahrenheit. | ||||||||||||
