Climate twins of Green Island, NY
These are the US cities whose 12-month climate pattern most closely matches Green Island'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: Green Island vs its climate twin
Top match: New Middletown, OH
| Month | Green Island | New Middletown | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.2°F | 16.9°F | 2.65 in | 36.9°F | 19.0°F | 2.86 in |
| February | 37.1°F | 18.2°F | 2.43 in | 39.7°F | 19.5°F | 2.20 in |
| March | 46.0°F | 26.2°F | 2.91 in | 49.2°F | 26.5°F | 3.08 in |
| April | 60.2°F | 37.7°F | 3.09 in | 62.9°F | 35.9°F | 3.65 in |
| May | 72.5°F | 49.3°F | 3.79 in | 73.3°F | 46.8°F | 3.89 in |
| June | 80.5°F | 59.0°F | 4.61 in | 81.5°F | 56.1°F | 4.47 in |
| July | 85.6°F | 64.1°F | 4.64 in | 85.9°F | 60.4°F | 4.55 in |
| August | 84.1°F | 62.2°F | 3.92 in | 84.8°F | 58.9°F | 3.91 in |
| September | 77.2°F | 54.4°F | 3.83 in | 78.6°F | 52.2°F | 3.86 in |
| October | 63.7°F | 43.2°F | 4.23 in | 66.3°F | 41.2°F | 3.22 in |
| November | 51.0°F | 33.2°F | 2.84 in | 53.1°F | 31.7°F | 2.96 in |
| December | 39.7°F | 24.7°F | 3.15 in | 41.8°F | 24.9°F | 3.13 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 →