Climate twins of Watertown Town, MA
These are the US cities whose 12-month climate pattern most closely matches Watertown Town'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: Watertown Town vs its climate twin
Top match: Lloyd Harbor, NY
| Month | Watertown Town | Lloyd Harbor | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 37.0°F | 19.4°F | 3.87 in | 37.9°F | 24.5°F | 3.72 in |
| February | 39.6°F | 21.0°F | 3.59 in | 40.0°F | 25.4°F | 3.09 in |
| March | 46.6°F | 28.4°F | 4.49 in | 47.3°F | 31.3°F | 4.24 in |
| April | 58.8°F | 38.1°F | 4.32 in | 59.8°F | 40.9°F | 4.09 in |
| May | 69.4°F | 48.2°F | 3.64 in | 69.6°F | 50.5°F | 3.88 in |
| June | 78.8°F | 57.9°F | 4.18 in | 78.4°F | 60.2°F | 4.29 in |
| July | 84.7°F | 64.0°F | 3.49 in | 83.2°F | 65.8°F | 3.83 in |
| August | 83.1°F | 62.5°F | 3.72 in | 81.4°F | 65.0°F | 4.32 in |
| September | 75.5°F | 54.9°F | 3.96 in | 74.3°F | 59.0°F | 4.67 in |
| October | 63.7°F | 43.0°F | 5.03 in | 62.6°F | 48.8°F | 4.26 in |
| November | 52.6°F | 34.2°F | 3.99 in | 52.2°F | 38.7°F | 3.48 in |
| December | 42.4°F | 25.7°F | 5.08 in | 43.1°F | 30.5°F | 4.64 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 →