Climate twins of New London, CT
These are the US cities whose 12-month climate pattern most closely matches New London's. Each "twin" must be at least 140 miles away to avoid trivial near-neighbor matches. Similarity is computed across all 24 monthly metrics (12 average temperatures + 12 average precipitations), normalized so temperature and precipitation contribute equally.
Side-by-side: New London vs its climate twin
Top match: Erie, PA
| Month | New London | Erie | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 38.3°F | 23.3°F | 2.68 in | 35.2°F | 21.3°F | 3.41 in |
| February | 40.2°F | 24.6°F | 2.20 in | 36.5°F | 21.4°F | 2.52 in |
| March | 46.6°F | 30.7°F | 3.82 in | 44.3°F | 27.9°F | 3.08 in |
| April | 56.2°F | 39.1°F | 3.58 in | 56.8°F | 38.0°F | 3.47 in |
| May | 64.8°F | 48.8°F | 3.31 in | 68.3°F | 49.3°F | 3.50 in |
| June | 73.8°F | 58.2°F | 3.30 in | 77.1°F | 59.4°F | 3.70 in |
| July | 79.8°F | 64.8°F | 3.24 in | 81.1°F | 64.2°F | 3.33 in |
| August | 79.2°F | 63.8°F | 3.32 in | 79.9°F | 63.2°F | 3.35 in |
| September | 73.5°F | 56.9°F | 3.83 in | 73.7°F | 56.7°F | 4.32 in |
| October | 63.2°F | 45.6°F | 3.66 in | 62.3°F | 46.3°F | 4.38 in |
| November | 53.3°F | 36.8°F | 3.24 in | 50.5°F | 36.7°F | 3.75 in |
| December | 43.9°F | 29.0°F | 3.13 in | 40.2°F | 28.0°F | 4.17 in |
How this is computed
Each city is represented by a 24-dimensional vector: 12 monthly average temperatures and 12 monthly average precipitations. Each dimension is z-score normalized across the population of US cities, so that temperature variance and precipitation variance contribute proportionally. Distance between cities is Euclidean. We filter out cities within 2° latitude/longitude (~140 miles) so that "twins" mean climatically similar but geographically distinct — not just the neighboring town. Full methodology →