Climate twins of Chelan, WA
These are the US cities whose 12-month climate pattern most closely matches Chelan'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: Chelan vs its climate twin
Top match: Hagerman, ID
| Month | Chelan | Hagerman | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.3°F | 21.6°F | 1.52 in | 38.1°F | 22.2°F | 1.32 in |
| February | 41.7°F | 24.3°F | 1.22 in | 44.9°F | 24.5°F | 0.86 in |
| March | 51.9°F | 30.3°F | 1.09 in | 55.4°F | 30.6°F | 1.03 in |
| April | 62.1°F | 37.5°F | 0.75 in | 62.4°F | 35.4°F | 0.83 in |
| May | 71.9°F | 46.2°F | 1.05 in | 72.3°F | 43.5°F | 1.03 in |
| June | 77.9°F | 53.0°F | 0.87 in | 81.6°F | 50.1°F | 0.57 in |
| July | 86.6°F | 59.1°F | 0.42 in | 91.9°F | 55.9°F | 0.15 in |
| August | 87.0°F | 58.1°F | 0.32 in | 90.5°F | 52.9°F | 0.18 in |
| September | 77.2°F | 49.2°F | 0.34 in | 80.5°F | 44.4°F | 0.42 in |
| October | 62.2°F | 38.8°F | 1.04 in | 65.9°F | 34.9°F | 0.73 in |
| November | 45.7°F | 29.5°F | 1.51 in | 49.5°F | 27.4°F | 1.11 in |
| December | 34.9°F | 22.6°F | 1.83 in | 37.8°F | 22.4°F | 1.58 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 →