Climate twins of Spearfish, SD
These are the US cities whose 12-month climate pattern most closely matches Spearfish'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: Spearfish vs its climate twin
Top match: Kilgore, NE
| Month | Spearfish | Kilgore | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 35.9°F | 15.7°F | 0.60 in | 33.1°F | 11.4°F | 0.77 in |
| February | 36.9°F | 16.3°F | 0.91 in | 36.5°F | 13.3°F | 0.87 in |
| March | 45.8°F | 24.2°F | 1.19 in | 47.1°F | 21.7°F | 1.47 in |
| April | 54.9°F | 32.0°F | 2.23 in | 56.3°F | 31.0°F | 2.96 in |
| May | 64.3°F | 41.8°F | 3.72 in | 66.9°F | 42.4°F | 3.37 in |
| June | 75.3°F | 51.3°F | 3.51 in | 77.8°F | 53.1°F | 3.51 in |
| July | 83.6°F | 57.6°F | 2.35 in | 84.7°F | 58.7°F | 2.64 in |
| August | 82.9°F | 56.1°F | 1.88 in | 84.0°F | 55.9°F | 2.31 in |
| September | 74.0°F | 47.6°F | 1.56 in | 75.4°F | 45.9°F | 1.81 in |
| October | 58.1°F | 35.4°F | 2.04 in | 60.7°F | 33.3°F | 1.41 in |
| November | 45.9°F | 25.6°F | 0.70 in | 46.2°F | 22.1°F | 0.74 in |
| December | 37.2°F | 17.5°F | 0.72 in | 35.3°F | 13.5°F | 0.78 in |
Cities that consider Spearfish their climate twin
These US cities have Spearfish in their top 3 most-similar list — meaning if you were to move from any of these places, Spearfish would feel familiar.
- Cody, NE (ranks Spearfish #2)
- Crookston, NE (ranks Spearfish #2)
- Kilgore, NE (ranks Spearfish #2)
- Nenzel, NE (ranks Spearfish #2)
- St. Francis, SD (ranks Spearfish #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 →