Climate twins of Tumwater, WA
These are the US cities whose 12-month climate pattern most closely matches Tumwater'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: Tumwater vs its climate twin
Top match: Scio, OR
| Month | Tumwater | Scio | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 46.0°F | 33.2°F | 7.80 in | 46.9°F | 34.4°F | 7.24 in |
| February | 49.1°F | 32.3°F | 5.09 in | 50.6°F | 34.9°F | 5.48 in |
| March | 53.7°F | 34.5°F | 5.68 in | 55.2°F | 37.2°F | 6.15 in |
| April | 58.9°F | 37.5°F | 3.67 in | 60.2°F | 40.8°F | 4.84 in |
| May | 66.1°F | 43.0°F | 2.26 in | 67.0°F | 45.7°F | 3.29 in |
| June | 70.8°F | 47.4°F | 1.46 in | 72.8°F | 50.2°F | 2.07 in |
| July | 77.6°F | 50.7°F | 0.53 in | 80.8°F | 53.6°F | 0.47 in |
| August | 78.0°F | 50.5°F | 0.96 in | 81.0°F | 53.2°F | 0.70 in |
| September | 72.1°F | 46.2°F | 2.04 in | 75.4°F | 49.4°F | 2.02 in |
| October | 60.2°F | 40.5°F | 5.07 in | 63.3°F | 43.4°F | 4.66 in |
| November | 50.6°F | 35.8°F | 8.21 in | 52.1°F | 38.3°F | 7.24 in |
| December | 44.9°F | 32.8°F | 7.85 in | 46.0°F | 34.3°F | 8.50 in |
Cities that consider Tumwater their climate twin
These US cities have Tumwater in their top 3 most-similar list — meaning if you were to move from any of these places, Tumwater would feel familiar.
- Dallas, OR (ranks Tumwater #1)
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 →