Climate twins of Portales, NM

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

Top match: Dell City, TX

Month	Portales			Dell City
	High	Low	Precip	High	Low	Precip
January	55.0°F	25.5°F	0.50 in	59.3°F	22.9°F	0.45 in
February	60.6°F	28.7°F	0.37 in	64.3°F	27.6°F	0.62 in
March	68.7°F	35.1°F	0.74 in	72.3°F	33.4°F	0.36 in
April	76.9°F	42.6°F	0.68 in	80.5°F	40.3°F	0.23 in
May	84.8°F	52.6°F	1.51 in	88.8°F	49.4°F	0.64 in
June	92.9°F	62.3°F	2.14 in	96.7°F	58.8°F	1.10 in
July	93.3°F	66.3°F	2.29 in	96.1°F	62.5°F	1.78 in
August	91.3°F	64.9°F	2.91 in	94.4°F	61.7°F	1.83 in
September	85.2°F	57.4°F	1.92 in	88.3°F	54.6°F	1.88 in
October	75.8°F	45.0°F	1.82 in	80.4°F	42.3°F	1.05 in
November	63.4°F	33.3°F	0.56 in	68.0°F	29.2°F	0.45 in
December	54.6°F	26.0°F	0.66 in	59.0°F	23.5°F	0.51 in

Cities that consider Portales their climate twin

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

Alpine, TX (ranks Portales #2)

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 →