Climate twins of Pomeroy, WA
These are the US cities whose 12-month climate pattern most closely matches Pomeroy'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: Pomeroy vs its climate twin
Top match: Shaniko, OR
| Month | Pomeroy | Shaniko | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 40.4°F | 27.1°F | 2.04 in | 42.9°F | 25.6°F | 1.50 in |
| February | 44.5°F | 28.3°F | 1.62 in | 46.1°F | 26.2°F | 1.29 in |
| March | 52.0°F | 32.6°F | 2.08 in | 52.8°F | 29.4°F | 1.22 in |
| April | 58.6°F | 37.3°F | 1.67 in | 58.7°F | 32.5°F | 1.52 in |
| May | 67.3°F | 43.9°F | 1.60 in | 68.4°F | 38.9°F | 1.99 in |
| June | 74.4°F | 48.5°F | 1.15 in | 75.7°F | 44.6°F | 1.04 in |
| July | 85.1°F | 52.9°F | 0.46 in | 87.3°F | 50.5°F | 0.34 in |
| August | 85.1°F | 52.8°F | 0.53 in | 86.5°F | 50.1°F | 0.34 in |
| September | 75.4°F | 45.2°F | 0.58 in | 78.2°F | 44.1°F | 0.50 in |
| October | 60.9°F | 37.0°F | 1.31 in | 63.5°F | 36.0°F | 1.23 in |
| November | 47.7°F | 31.5°F | 2.32 in | 49.7°F | 29.3°F | 1.76 in |
| December | 39.5°F | 26.3°F | 2.27 in | 41.6°F | 23.8°F | 1.81 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 →