Climate twins of Granite Falls, WA

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

Top match: Yacolt, WA

Month	Granite Falls			Yacolt
	High	Low	Precip	High	Low	Precip
January	47.4°F	28.6°F	5.92 in	46.1°F	31.9°F	7.20 in
February	50.5°F	28.0°F	4.42 in	50.4°F	31.7°F	5.32 in
March	54.2°F	31.5°F	5.00 in	54.7°F	34.6°F	5.59 in
April	59.8°F	35.3°F	4.34 in	59.7°F	37.9°F	4.54 in
May	66.7°F	40.9°F	3.43 in	66.5°F	43.3°F	3.36 in
June	71.0°F	45.4°F	2.66 in	71.1°F	47.3°F	2.31 in
July	77.3°F	47.9°F	1.15 in	78.6°F	50.6°F	0.63 in
August	77.7°F	47.1°F	1.34 in	79.6°F	50.2°F	0.80 in
September	72.0°F	42.2°F	2.49 in	74.5°F	45.6°F	2.20 in
October	60.8°F	36.9°F	4.94 in	62.5°F	39.9°F	4.82 in
November	52.2°F	31.2°F	7.15 in	51.6°F	35.4°F	7.61 in
December	46.1°F	27.9°F	6.15 in	45.1°F	31.9°F	7.99 in

Cities that consider Granite Falls their climate twin

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

Pierce, ID (ranks Granite Falls #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 →