Climate twins of Ketchum, ID
These are the US cities whose 12-month climate pattern most closely matches Ketchum'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: Ketchum vs its climate twin
Top match: Paris, ID
| Month | Ketchum | Paris | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 31.3°F | 8.0°F | 2.25 in | 28.7°F | 6.7°F | 1.73 in |
| February | 35.0°F | 11.1°F | 1.88 in | 32.0°F | 8.6°F | 1.60 in |
| March | 42.6°F | 18.7°F | 1.76 in | 42.1°F | 18.3°F | 1.48 in |
| April | 51.9°F | 26.9°F | 1.17 in | 53.3°F | 27.0°F | 1.74 in |
| May | 61.6°F | 34.7°F | 1.78 in | 64.2°F | 34.4°F | 2.29 in |
| June | 69.7°F | 39.9°F | 1.26 in | 74.5°F | 40.3°F | 1.28 in |
| July | 80.0°F | 45.1°F | 0.55 in | 84.6°F | 46.2°F | 0.67 in |
| August | 78.7°F | 43.5°F | 0.50 in | 83.9°F | 44.6°F | 0.96 in |
| September | 69.0°F | 36.1°F | 1.01 in | 73.5°F | 36.5°F | 1.35 in |
| October | 55.9°F | 27.7°F | 1.40 in | 58.6°F | 27.0°F | 1.70 in |
| November | 41.2°F | 17.4°F | 1.21 in | 42.7°F | 18.5°F | 1.38 in |
| December | 30.3°F | 9.2°F | 2.57 in | 30.4°F | 9.4°F | 1.71 in |
Cities that consider Ketchum their climate twin
These US cities have Ketchum in their top 3 most-similar list — meaning if you were to move from any of these places, Ketchum would feel familiar.
- Seneca, OR (ranks Ketchum #2)
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 →