Climate twins of Ketchikan, AK
These are the US cities whose 12-month climate pattern most closely matches Ketchikan'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: Ketchikan vs its climate twin
Top match: Port Alexander, AK
| Month | Ketchikan | Port Alexander | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 39.1°F | 32.3°F | 17.63 in | 39.7°F | 32.3°F | 16.25 in |
| February | 41.3°F | 33.1°F | 11.13 in | 40.8°F | 32.5°F | 11.72 in |
| March | 44.9°F | 34.8°F | 12.64 in | 43.1°F | 32.7°F | 11.05 in |
| April | 51.6°F | 38.8°F | 9.53 in | 49.7°F | 36.8°F | 8.64 in |
| May | 59.3°F | 45.1°F | 7.19 in | 56.7°F | 41.7°F | 7.86 in |
| June | 63.7°F | 50.3°F | 5.86 in | 61.4°F | 46.7°F | 6.65 in |
| July | 66.2°F | 54.3°F | 6.51 in | 64.3°F | 50.1°F | 9.03 in |
| August | 66.8°F | 54.3°F | 11.16 in | 64.1°F | 50.2°F | 13.94 in |
| September | 60.0°F | 50.4°F | 17.68 in | 58.4°F | 46.9°F | 19.34 in |
| October | 51.8°F | 43.4°F | 19.10 in | 50.9°F | 41.6°F | 19.85 in |
| November | 43.4°F | 37.1°F | 19.46 in | 44.2°F | 36.3°F | 18.12 in |
| December | 39.5°F | 33.4°F | 19.38 in | 40.9°F | 33.4°F | 19.58 in |
Cities that consider Ketchikan their climate twin
These US cities have Ketchikan in their top 3 most-similar list — meaning if you were to move from any of these places, Ketchikan would feel familiar.
- Port Alexander, AK (ranks Ketchikan #2)
- Pelican, AK (ranks Ketchikan #2)
- Angoon, AK (ranks Ketchikan #2)
- Whittier, AK (ranks Ketchikan #3)
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 →