Climate twins of Kupreanof, AK
These are the US cities whose 12-month climate pattern most closely matches Kupreanof'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: Kupreanof vs its climate twin
Top match: Seward, AK
| Month | Kupreanof | Seward | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.6°F | 27.2°F | 11.39 in | 31.3°F | 21.1°F | 6.47 in |
| February | 36.7°F | 27.5°F | 7.60 in | 34.3°F | 23.5°F | 6.35 in |
| March | 40.3°F | 29.6°F | 7.60 in | 37.3°F | 24.9°F | 3.85 in |
| April | 47.8°F | 35.1°F | 6.66 in | 45.4°F | 32.2°F | 4.29 in |
| May | 55.3°F | 41.7°F | 5.86 in | 53.4°F | 39.2°F | 3.50 in |
| June | 59.9°F | 48.1°F | 4.98 in | 59.0°F | 45.7°F | 2.34 in |
| July | 61.7°F | 51.0°F | 5.63 in | 62.2°F | 50.2°F | 3.11 in |
| August | 61.2°F | 50.3°F | 8.21 in | 62.0°F | 49.6°F | 5.39 in |
| September | 55.7°F | 45.8°F | 14.35 in | 55.7°F | 43.4°F | 9.90 in |
| October | 47.4°F | 39.2°F | 13.84 in | 45.7°F | 34.7°F | 8.69 in |
| November | 39.3°F | 32.3°F | 12.28 in | 36.1°F | 26.6°F | 7.60 in |
| December | 35.3°F | 28.4°F | 11.79 in | 33.2°F | 23.2°F | 8.22 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 →