Climate twins of Lima, MT

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

Top match: Cut Bank, MT

Month	Lima			Cut Bank
	High	Low	Precip	High	Low	Precip
January	30.2°F	11.0°F	0.24 in	32.3°F	11.3°F	0.22 in
February	33.7°F	11.9°F	0.25 in	34.2°F	12.0°F	0.23 in
March	43.7°F	20.7°F	0.40 in	42.6°F	19.7°F	0.36 in
April	52.7°F	27.0°F	0.93 in	52.3°F	28.1°F	0.95 in
May	62.2°F	35.3°F	1.66 in	62.3°F	37.0°F	1.65 in
June	71.6°F	41.8°F	1.99 in	70.4°F	44.7°F	2.73 in
July	82.6°F	47.3°F	1.27 in	80.2°F	49.6°F	1.29 in
August	81.3°F	45.7°F	1.02 in	79.7°F	48.0°F	0.96 in
September	71.3°F	38.7°F	0.92 in	68.7°F	40.1°F	1.08 in
October	56.4°F	29.2°F	0.98 in	54.4°F	29.7°F	0.57 in
November	40.9°F	19.2°F	0.41 in	41.0°F	20.2°F	0.42 in
December	29.7°F	11.3°F	0.28 in	32.9°F	12.6°F	0.31 in

Cities that consider Lima their climate twin

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

Cut Bank, MT (ranks Lima #2)
Laramie, WY (ranks Lima #3)
Hingham, MT (ranks Lima #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 →