Climate twins of Dillon, MT

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

Top match: Choteau, MT

Month	Dillon			Choteau
	High	Low	Precip	High	Low	Precip
January	33.3°F	14.5°F	0.31 in	37.4°F	13.4°F	0.28 in
February	36.7°F	15.8°F	0.35 in	38.9°F	14.2°F	0.41 in
March	45.9°F	22.5°F	0.67 in	47.0°F	21.0°F	0.52 in
April	54.3°F	28.4°F	1.51 in	55.8°F	28.9°F	1.15 in
May	64.4°F	36.1°F	1.93 in	65.1°F	37.0°F	2.14 in
June	72.8°F	42.2°F	1.92 in	72.3°F	44.1°F	2.75 in
July	82.9°F	47.6°F	0.91 in	82.0°F	48.3°F	0.99 in
August	80.9°F	45.5°F	0.86 in	81.0°F	46.9°F	1.06 in
September	70.8°F	39.3°F	0.89 in	71.6°F	39.8°F	1.16 in
October	56.4°F	30.3°F	0.95 in	58.0°F	30.6°F	0.74 in
November	41.3°F	21.0°F	0.52 in	45.0°F	21.6°F	0.41 in
December	31.6°F	13.2°F	0.45 in	37.4°F	14.6°F	0.32 in

Cities that consider Dillon their climate twin

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

Clyde Park, MT (ranks Dillon #1)

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 →