Climate twins of Fountain Hills, AZ

These are the US cities whose 12-month climate pattern most closely matches Fountain Hills'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.

Rank 1 closest
Wellton, AZ
similarity distance: 1.381 (lower = more similar)
Rank 2 closest
Coachella, CA
similarity distance: 1.569 (lower = more similar)
Rank 3 closest
Twentynine Palms, CA
similarity distance: 1.570 (lower = more similar)

Side-by-side: Fountain Hills vs its climate twin

Top match: Wellton, AZ

Month Fountain Hills Wellton
High Low Precip High Low Precip
January 63.9°F 44.5°F 1.41 in 68.4°F 43.3°F 0.58 in
February 67.4°F 46.2°F 1.33 in 71.9°F 45.4°F 0.59 in
March 73.9°F 50.7°F 1.28 in 78.8°F 50.5°F 0.43 in
April 82.0°F 56.4°F 0.33 in 85.4°F 55.7°F 0.09 in
May 91.0°F 64.5°F 0.23 in 93.1°F 62.3°F 0.04 in
June 100.6°F 72.8°F 0.14 in 102.5°F 70.5°F 0.02 in
July 103.0°F 80.3°F 0.80 in 106.0°F 80.0°F 0.29 in
August 101.9°F 79.8°F 1.33 in 105.3°F 79.7°F 0.61 in
September 97.1°F 73.7°F 0.81 in 100.2°F 72.6°F 0.44 in
October 86.6°F 62.6°F 0.63 in 89.5°F 59.9°F 0.19 in
November 73.7°F 51.3°F 0.74 in 76.7°F 49.3°F 0.35 in
December 63.0°F 43.9°F 1.15 in 67.3°F 41.5°F 0.37 in

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 →