Climate twins of Challis, ID
These are the US cities whose 12-month climate pattern most closely matches Challis'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: Challis vs its climate twin
Top match: Powell, WY
| Month | Challis | Powell | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 29.2°F | 10.7°F | 0.41 in | 31.5°F | 6.1°F | 0.18 in |
| February | 36.7°F | 17.0°F | 0.36 in | 35.9°F | 10.1°F | 0.18 in |
| March | 49.2°F | 25.5°F | 0.46 in | 48.3°F | 19.6°F | 0.26 in |
| April | 56.8°F | 31.2°F | 0.52 in | 56.9°F | 28.4°F | 0.57 in |
| May | 66.8°F | 40.0°F | 0.93 in | 65.9°F | 39.6°F | 1.22 in |
| June | 75.5°F | 46.3°F | 0.93 in | 76.0°F | 47.1°F | 1.33 in |
| July | 86.9°F | 51.7°F | 0.42 in | 85.2°F | 52.4°F | 0.77 in |
| August | 84.9°F | 49.9°F | 0.45 in | 83.7°F | 49.7°F | 0.42 in |
| September | 74.5°F | 42.0°F | 0.85 in | 73.0°F | 40.8°F | 0.76 in |
| October | 58.5°F | 31.6°F | 0.56 in | 57.6°F | 29.2°F | 0.70 in |
| November | 40.5°F | 20.6°F | 0.52 in | 43.1°F | 17.0°F | 0.21 in |
| December | 28.8°F | 10.8°F | 0.52 in | 32.6°F | 8.2°F | 0.10 in |
Cities that consider Challis their climate twin
These US cities have Challis in their top 3 most-similar list — meaning if you were to move from any of these places, Challis would feel familiar.
- Powell, WY (ranks Challis #2)
- Byron, WY (ranks Challis #1)
- Cowley, WY (ranks Challis #1)
- Lovell, WY (ranks Challis #1)
- Burlington, WY (ranks Challis #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 →