Climate twins of Holyoke, CO

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

Top match: Hot Springs, SD

Month	Holyoke			Hot Springs
	High	Low	Precip	High	Low	Precip
January	41.6°F	12.7°F	0.32 in	40.4°F	14.1°F	0.41 in
February	44.2°F	14.5°F	0.51 in	43.3°F	15.4°F	0.57 in
March	54.1°F	22.7°F	0.86 in	54.1°F	23.6°F	1.05 in
April	61.8°F	31.1°F	1.92 in	61.6°F	31.2°F	2.12 in
May	70.9°F	42.5°F	2.83 in	70.2°F	41.4°F	3.28 in
June	82.5°F	53.1°F	2.76 in	80.6°F	50.8°F	3.05 in
July	88.0°F	58.6°F	2.75 in	88.5°F	57.4°F	2.41 in
August	86.2°F	56.0°F	2.39 in	87.4°F	55.2°F	2.00 in
September	78.6°F	46.6°F	1.40 in	79.7°F	45.4°F	1.40 in
October	65.2°F	32.9°F	1.23 in	64.7°F	33.3°F	1.40 in
November	52.5°F	21.4°F	0.52 in	50.5°F	22.7°F	0.43 in
December	42.3°F	13.0°F	0.44 in	40.5°F	14.8°F	0.49 in

Cities that consider Holyoke their climate twin

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

Hot Springs, SD (ranks Holyoke #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 →