New London, CT Weather & Climate Normals
New London's real weather, in one number
New London, CT scores 51/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
New London's hottest and coldest months
New London's hottest month is Jul, averaging 72°F; its coldest is Jan, averaging 31°F, a 41.5°F swing across the year, a middling gap by national standards.
New London's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 38°F | 23°F | 2.68in |
| Feb | 40°F | 25°F | 2.2in |
| Mar | 47°F | 31°F | 3.82in |
| Apr | 56°F | 39°F | 3.58in |
| May | 65°F | 49°F | 3.31in |
| Jun | 74°F | 58°F | 3.3in |
| Jul | 80°F | 65°F | 3.24in |
| Aug | 79°F | 64°F | 3.32in |
| Sep | 74°F | 57°F | 3.83in |
| Oct | 63°F | 46°F | 3.66in |
| Nov | 53°F | 37°F | 3.24in |
| Dec | 44°F | 29°F | 3.13in |
May, Jun, Jul, Aug, and Sep are the best time to see New London at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in New London
Over a typical year, New London sees about 39.31in of precipitation a year across roughly 116 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where New London ranks
New London ranks 1472 of 4876 US cities in this dataset for comfort score, and 3 of 21 within CT. About 28,081 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Groton New London Ap, CT US, 2.5 miles from New London, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · How the comfort score is calculated