Climate twins of Mullan, ID

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

Top match: South Cle Elum, WA

Month	Mullan			South Cle Elum
	High	Low	Precip	High	Low	Precip
January	35.1°F	22.5°F	4.14 in	35.0°F	22.2°F	3.40 in
February	38.5°F	22.4°F	3.54 in	40.7°F	23.6°F	2.49 in
March	46.2°F	26.7°F	4.47 in	48.9°F	27.8°F	2.73 in
April	54.7°F	32.4°F	2.98 in	57.3°F	32.9°F	1.41 in
May	65.3°F	40.2°F	2.53 in	66.1°F	40.4°F	1.64 in
June	71.0°F	45.2°F	2.97 in	71.9°F	46.8°F	1.10 in
July	80.8°F	49.2°F	0.95 in	81.1°F	52.7°F	0.54 in
August	81.2°F	48.2°F	0.98 in	81.4°F	51.1°F	0.47 in
September	70.7°F	41.8°F	1.57 in	72.9°F	42.7°F	0.90 in
October	55.2°F	33.6°F	3.93 in	57.8°F	33.9°F	2.44 in
November	40.9°F	27.3°F	4.70 in	43.2°F	27.7°F	4.07 in
December	32.2°F	22.1°F	3.80 in	34.3°F	22.3°F	3.50 in

Cities that consider Mullan their climate twin

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

Alta, UT (ranks Mullan #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 →