Climate twins of Key West, FL
These are the US cities whose 12-month climate pattern most closely matches Key West'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: Key West vs its climate twin
Top match: Fort Pierce, FL
| Month | Key West | Fort Pierce | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 74.7°F | 62.9°F | 2.01 in | 72.4°F | 53.0°F | 3.04 in |
| February | 76.5°F | 64.3°F | 1.96 in | 74.3°F | 55.4°F | 2.80 in |
| March | 78.8°F | 66.8°F | 1.41 in | 77.0°F | 58.5°F | 3.03 in |
| April | 82.7°F | 70.9°F | 2.17 in | 80.8°F | 63.9°F | 3.62 in |
| May | 85.6°F | 74.0°F | 3.71 in | 84.4°F | 69.0°F | 4.20 in |
| June | 88.0°F | 76.8°F | 4.81 in | 87.6°F | 72.9°F | 6.22 in |
| July | 89.8°F | 77.8°F | 4.48 in | 89.2°F | 74.1°F | 6.19 in |
| August | 89.7°F | 78.5°F | 6.13 in | 89.2°F | 74.6°F | 7.25 in |
| September | 88.3°F | 77.0°F | 8.24 in | 87.5°F | 74.0°F | 8.21 in |
| October | 85.2°F | 74.6°F | 6.01 in | 83.8°F | 69.6°F | 5.72 in |
| November | 80.6°F | 69.8°F | 3.28 in | 78.3°F | 62.2°F | 3.20 in |
| December | 76.9°F | 66.0°F | 2.22 in | 74.4°F | 56.5°F | 2.41 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 →