Climate twins of Cottonwood, SD

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

Top match: Camp Crook, SD

Month	Cottonwood			Camp Crook
	High	Low	Precip	High	Low	Precip
January	33.1°F	8.1°F	0.41 in	33.5°F	10.5°F	0.31 in
February	37.0°F	10.5°F	0.56 in	36.5°F	12.8°F	0.45 in
March	47.6°F	20.4°F	1.03 in	47.7°F	21.7°F	0.70 in
April	57.8°F	30.0°F	1.96 in	58.3°F	31.2°F	1.61 in
May	68.3°F	42.0°F	2.90 in	68.6°F	41.5°F	2.87 in
June	79.4°F	52.7°F	3.09 in	78.8°F	51.2°F	2.91 in
July	88.2°F	59.2°F	2.10 in	88.4°F	57.3°F	2.06 in
August	87.6°F	55.8°F	1.63 in	87.5°F	54.7°F	1.60 in
September	78.2°F	45.0°F	1.22 in	77.8°F	44.6°F	1.19 in
October	61.8°F	31.3°F	1.46 in	61.1°F	32.9°F	1.27 in
November	47.1°F	19.2°F	0.54 in	46.2°F	21.7°F	0.48 in
December	35.7°F	10.2°F	0.48 in	35.5°F	13.3°F	0.34 in

Cities that consider Cottonwood their climate twin

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

Camp Crook, SD (ranks Cottonwood #1)
Newcastle, WY (ranks Cottonwood #3)
Terry, MT (ranks Cottonwood #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 →