Climate twins of Chelsea, MA
These are the US cities whose 12-month climate pattern most closely matches Chelsea'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: Chelsea vs its climate twin
Top match: Village of the Branch, NY
| Month | Chelsea | Village of the Branch | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 36.8°F | 23.1°F | 3.39 in | 39.2°F | 24.6°F | 3.66 in |
| February | 39.0°F | 24.6°F | 3.21 in | 41.0°F | 25.5°F | 3.29 in |
| March | 45.5°F | 31.1°F | 4.17 in | 47.7°F | 32.0°F | 4.51 in |
| April | 56.4°F | 40.8°F | 3.63 in | 58.3°F | 41.2°F | 4.06 in |
| May | 66.5°F | 50.3°F | 3.25 in | 68.3°F | 50.8°F | 3.28 in |
| June | 76.2°F | 59.7°F | 3.89 in | 77.2°F | 60.9°F | 4.00 in |
| July | 82.1°F | 66.0°F | 3.27 in | 82.8°F | 67.3°F | 3.26 in |
| August | 80.4°F | 65.1°F | 3.23 in | 81.4°F | 66.0°F | 4.24 in |
| September | 73.1°F | 58.2°F | 3.56 in | 74.8°F | 58.9°F | 3.60 in |
| October | 62.1°F | 47.5°F | 4.03 in | 64.1°F | 47.3°F | 3.97 in |
| November | 51.6°F | 37.9°F | 3.66 in | 53.6°F | 37.6°F | 3.41 in |
| December | 42.2°F | 29.2°F | 4.30 in | 44.4°F | 29.8°F | 4.71 in |
Cities that consider Chelsea their climate twin
These US cities have Chelsea in their top 3 most-similar list — meaning if you were to move from any of these places, Chelsea would feel familiar.
- Islandia, NY (ranks Chelsea #2)
- Lake Grove, NY (ranks Chelsea #2)
- Village of the Branch, NY (ranks Chelsea #2)
- Bridgeport, CT (ranks Chelsea #2)
- Atlantic City, NJ (ranks Chelsea #2)
- Brigantine, NJ (ranks Chelsea #2)
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 →