Climate twins of San Ysidro, NM

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

Top match: Show Low, AZ

Month	San Ysidro			Show Low
	High	Low	Precip	High	Low	Precip
January	47.6°F	18.9°F	1.02 in	46.0°F	23.6°F	1.35 in
February	52.0°F	22.2°F	0.83 in	51.0°F	26.8°F	1.16 in
March	60.1°F	27.7°F	0.99 in	58.0°F	31.3°F	0.91 in
April	67.5°F	32.7°F	0.86 in	64.9°F	36.8°F	0.57 in
May	76.4°F	40.9°F	0.78 in	73.6°F	44.5°F	0.62 in
June	87.2°F	50.0°F	0.68 in	83.9°F	53.7°F	0.42 in
July	88.6°F	55.3°F	2.61 in	85.3°F	59.2°F	2.35 in
August	86.2°F	54.0°F	2.62 in	82.8°F	57.7°F	2.97 in
September	80.2°F	47.0°F	1.57 in	78.3°F	52.0°F	1.44 in
October	70.1°F	36.4°F	1.37 in	68.1°F	40.6°F	1.35 in
November	56.4°F	26.3°F	0.88 in	56.4°F	31.0°F	1.19 in
December	47.0°F	19.0°F	0.94 in	45.8°F	23.4°F	1.37 in

Cities that consider San Ysidro their climate twin

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

Show Low, AZ (ranks San Ysidro #1)
Springer, NM (ranks San Ysidro #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 →