Climate twins of Port Leyden, NY
These are the US cities whose 12-month climate pattern most closely matches Port Leyden'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: Port Leyden vs its climate twin
Top match: Jacksonville, VT
| Month | Port Leyden | Jacksonville | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 24.6°F | 8.2°F | 4.92 in | 28.9°F | 11.1°F | 4.25 in |
| February | 27.2°F | 9.3°F | 3.97 in | 31.3°F | 12.6°F | 3.71 in |
| March | 35.5°F | 17.6°F | 4.15 in | 38.6°F | 19.9°F | 4.39 in |
| April | 49.5°F | 30.2°F | 4.56 in | 50.9°F | 31.5°F | 4.37 in |
| May | 63.0°F | 42.6°F | 4.64 in | 62.9°F | 41.8°F | 4.01 in |
| June | 70.9°F | 51.6°F | 5.27 in | 70.4°F | 51.8°F | 4.65 in |
| July | 74.9°F | 56.2°F | 4.60 in | 75.1°F | 56.6°F | 4.82 in |
| August | 73.9°F | 55.0°F | 4.69 in | 74.6°F | 54.6°F | 4.82 in |
| September | 66.8°F | 47.6°F | 4.94 in | 68.3°F | 47.5°F | 4.60 in |
| October | 54.0°F | 36.6°F | 6.11 in | 56.2°F | 36.2°F | 4.99 in |
| November | 41.3°F | 26.0°F | 5.04 in | 44.3°F | 27.6°F | 3.88 in |
| December | 30.2°F | 16.0°F | 5.27 in | 34.4°F | 18.6°F | 4.66 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 →