Climate twins of South Tucson, AZ

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

Top match: Presidio, TX

Month	South Tucson			Presidio
	High	Low	Precip	High	Low	Precip
January	65.9°F	42.3°F	0.88 in	67.9°F	33.8°F	0.48 in
February	68.9°F	44.9°F	0.84 in	73.9°F	40.6°F	0.43 in
March	75.7°F	50.0°F	0.56 in	81.2°F	47.7°F	0.52 in
April	82.6°F	55.9°F	0.33 in	89.9°F	56.3°F	0.17 in
May	91.0°F	64.2°F	0.17 in	97.5°F	65.8°F	0.41 in
June	100.5°F	73.1°F	0.29 in	103.1°F	73.8°F	1.04 in
July	99.7°F	76.9°F	2.05 in	101.0°F	75.2°F	1.84 in
August	98.0°F	76.2°F	2.63 in	100.2°F	75.0°F	1.42 in
September	94.8°F	71.7°F	1.70 in	94.7°F	69.2°F	0.95 in
October	85.7°F	60.3°F	0.58 in	88.1°F	58.0°F	0.70 in
November	74.6°F	49.5°F	0.62 in	76.9°F	44.8°F	0.48 in
December	64.9°F	41.5°F	0.92 in	67.5°F	35.0°F	0.48 in

Cities that consider South Tucson their climate twin

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

Presidio, TX (ranks South Tucson #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 →