Climate twins of Grangeville, ID
These are the US cities whose 12-month climate pattern most closely matches Grangeville'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: Grangeville vs its climate twin
Top match: Belt, MT
| Month | Grangeville | Belt | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 37.8°F | 24.5°F | 1.27 in | 36.6°F | 16.6°F | 1.05 in |
| February | 42.0°F | 25.4°F | 1.43 in | 37.6°F | 17.0°F | 0.88 in |
| March | 49.3°F | 29.4°F | 2.31 in | 45.8°F | 23.4°F | 1.27 in |
| April | 55.8°F | 34.4°F | 2.90 in | 54.8°F | 30.6°F | 2.51 in |
| May | 63.8°F | 41.6°F | 3.44 in | 63.7°F | 38.5°F | 2.88 in |
| June | 70.3°F | 47.5°F | 3.26 in | 71.3°F | 45.6°F | 3.68 in |
| July | 82.1°F | 53.7°F | 1.07 in | 82.0°F | 51.7°F | 1.75 in |
| August | 82.5°F | 52.9°F | 0.90 in | 82.7°F | 50.7°F | 1.51 in |
| September | 72.7°F | 45.1°F | 1.30 in | 72.2°F | 43.4°F | 2.09 in |
| October | 57.6°F | 36.5°F | 1.93 in | 56.8°F | 33.6°F | 1.69 in |
| November | 44.9°F | 29.1°F | 1.91 in | 44.1°F | 24.7°F | 1.24 in |
| December | 37.0°F | 23.7°F | 1.79 in | 36.5°F | 17.5°F | 1.05 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 →