Climate twins of Snohomish, WA
These are the US cities whose 12-month climate pattern most closely matches Snohomish'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: Snohomish vs its climate twin
Top match: North Plains, OR
| Month | Snohomish | North Plains | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 47.9°F | 34.6°F | 5.04 in | 47.3°F | 33.6°F | 5.27 in |
| February | 50.4°F | 34.5°F | 3.70 in | 51.0°F | 33.5°F | 3.97 in |
| March | 54.5°F | 37.2°F | 4.11 in | 55.9°F | 36.5°F | 3.70 in |
| April | 59.6°F | 41.4°F | 3.40 in | 60.9°F | 39.2°F | 2.57 in |
| May | 65.8°F | 47.0°F | 2.70 in | 68.7°F | 44.7°F | 2.02 in |
| June | 69.8°F | 51.8°F | 2.30 in | 73.5°F | 48.6°F | 1.31 in |
| July | 74.8°F | 55.3°F | 1.04 in | 82.1°F | 52.2°F | 0.37 in |
| August | 75.7°F | 55.2°F | 1.15 in | 82.4°F | 51.8°F | 0.48 in |
| September | 70.4°F | 49.6°F | 2.34 in | 76.4°F | 47.5°F | 1.38 in |
| October | 60.7°F | 43.3°F | 3.70 in | 63.7°F | 40.9°F | 3.37 in |
| November | 52.4°F | 37.6°F | 5.82 in | 52.6°F | 36.5°F | 5.44 in |
| December | 46.7°F | 34.1°F | 4.95 in | 46.2°F | 33.3°F | 6.05 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 →