Climate twins of Colville, WA

These are the US cities whose 12-month climate pattern most closely matches Colville'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: Colville vs its climate twin

Top match: Libby, MT

Month	Colville			Libby
	High	Low	Precip	High	Low	Precip
January	34.3°F	23.2°F	2.20 in	34.4°F	21.5°F	1.92 in
February	41.9°F	23.9°F	1.47 in	40.9°F	22.2°F	1.29 in
March	52.8°F	29.5°F	1.89 in	51.8°F	26.8°F	1.73 in
April	62.5°F	35.3°F	1.53 in	61.5°F	31.7°F	1.14 in
May	72.2°F	43.0°F	1.93 in	72.6°F	38.7°F	1.66 in
June	78.3°F	48.6°F	2.14 in	79.6°F	45.4°F	2.04 in
July	88.4°F	52.6°F	0.83 in	89.3°F	49.2°F	0.91 in
August	88.5°F	51.0°F	0.68 in	89.5°F	47.4°F	0.74 in
September	78.2°F	43.8°F	0.72 in	77.6°F	40.9°F	1.09 in
October	60.6°F	34.5°F	1.51 in	58.5°F	33.8°F	1.82 in
November	43.5°F	28.9°F	2.19 in	41.1°F	28.3°F	2.29 in
December	34.2°F	23.5°F	2.80 in	32.8°F	21.8°F	2.52 in

Cities that consider Colville their climate twin

These US cities have Colville in their top 3 most-similar list — meaning if you were to move from any of these places, Colville would feel familiar.

Libby, MT (ranks Colville #3)
Halfway, OR (ranks Colville #3)
Cambridge, ID (ranks Colville #3)
Midvale, ID (ranks Colville #3)

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 →