Climate twins of Kennewick, WA

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

Top match: Glenns Ferry, ID

Month	Kennewick			Glenns Ferry
	High	Low	Precip	High	Low	Precip
January	41.7°F	29.2°F	1.13 in	43.7°F	24.9°F	1.50 in
February	48.1°F	30.9°F	0.79 in	50.2°F	26.6°F	0.82 in
March	58.1°F	35.9°F	0.66 in	60.3°F	32.1°F	1.01 in
April	66.3°F	42.4°F	0.61 in	67.9°F	37.5°F	0.89 in
May	75.3°F	50.1°F	0.84 in	78.5°F	45.5°F	1.07 in
June	82.0°F	56.4°F	0.58 in	87.9°F	52.6°F	0.71 in
July	91.3°F	62.3°F	0.21 in	99.1°F	58.6°F	0.23 in
August	90.3°F	61.3°F	0.17 in	97.2°F	55.7°F	0.28 in
September	80.5°F	53.2°F	0.26 in	86.3°F	46.1°F	0.44 in
October	65.9°F	43.1°F	0.67 in	71.3°F	36.0°F	0.98 in
November	50.9°F	34.9°F	0.87 in	55.1°F	28.8°F	1.11 in
December	41.5°F	29.6°F	1.08 in	43.9°F	24.5°F	1.56 in

Cities that consider Kennewick their climate twin

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

Glenns Ferry, ID (ranks Kennewick #2)
Melba, ID (ranks Kennewick #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 →