Climate twins of Martin, SD

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

Top match: Chappell, NE

Month	Martin			Chappell
	High	Low	Precip	High	Low	Precip
January	34.9°F	12.7°F	0.42 in	39.5°F	13.4°F	0.33 in
February	38.2°F	15.1°F	0.65 in	41.4°F	15.7°F	0.54 in
March	49.6°F	24.0°F	1.23 in	51.7°F	24.3°F	1.04 in
April	58.7°F	31.9°F	2.40 in	60.2°F	32.9°F	2.13 in
May	68.9°F	42.4°F	3.33 in	70.0°F	43.5°F	2.94 in
June	79.4°F	52.6°F	3.46 in	81.2°F	53.4°F	3.07 in
July	87.3°F	59.2°F	2.86 in	87.4°F	60.2°F	2.66 in
August	85.9°F	57.2°F	2.16 in	85.3°F	57.6°F	2.41 in
September	77.4°F	47.9°F	1.19 in	76.9°F	47.7°F	1.58 in
October	60.9°F	34.6°F	1.60 in	63.1°F	34.1°F	1.39 in
November	46.7°F	22.7°F	0.75 in	50.2°F	22.4°F	0.50 in
December	35.8°F	14.8°F	0.63 in	39.8°F	14.0°F	0.39 in

Cities that consider Martin their climate twin

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

Chappell, NE (ranks Martin #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 →