Climate twins of Windsor, CA

These are the US cities whose 12-month climate pattern most closely matches Windsor'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
Sonora, CA
similarity distance: 2.375 (lower = more similar)
Rank 2 closest
Sierra Madre, CA
similarity distance: 3.028 (lower = more similar)
Rank 3 closest
Grants Pass, OR
similarity distance: 3.041 (lower = more similar)

Side-by-side: Windsor vs its climate twin

Top match: Sonora, CA

Month Windsor Sonora
High Low Precip High Low Precip
January 57.9°F 37.5°F 6.67 in 55.7°F 32.8°F 6.32 in
February 61.7°F 39.4°F 6.67 in 58.2°F 34.2°F 5.50 in
March 65.1°F 41.4°F 4.58 in 62.1°F 37.0°F 5.37 in
April 69.0°F 43.2°F 2.10 in 66.7°F 39.7°F 3.03 in
May 74.7°F 46.6°F 1.27 in 75.6°F 45.5°F 1.54 in
June 81.8°F 50.1°F 0.31 in 85.3°F 50.8°F 0.34 in
July 83.5°F 51.7°F 0.01 in 92.8°F 56.8°F 0.03 in
August 84.1°F 51.9°F 0.05 in 91.9°F 55.5°F 0.07 in
September 83.4°F 49.6°F 0.13 in 86.7°F 50.8°F 0.20 in
October 77.1°F 45.5°F 1.65 in 76.2°F 43.0°F 1.64 in
November 65.4°F 40.1°F 3.58 in 63.2°F 36.4°F 3.24 in
December 57.5°F 36.9°F 6.76 in 55.1°F 32.4°F 5.51 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 →