Climate twins of San Juan Bautista, CA

These are the US cities whose 12-month climate pattern most closely matches San Juan Bautista'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
Oceanside, CA
similarity distance: 1.251 (lower = more similar)
Rank 2 closest
Goleta, CA
similarity distance: 1.420 (lower = more similar)
Rank 3 closest
Oxnard, CA
similarity distance: 1.432 (lower = more similar)

Side-by-side: San Juan Bautista vs its climate twin

Top match: Oceanside, CA

Month San Juan Bautista Oceanside
High Low Precip High Low Precip
January 59.6°F 38.7°F 3.10 in 66.7°F 40.5°F 2.37 in
February 62.0°F 40.7°F 2.65 in 66.0°F 42.1°F 2.90 in
March 65.6°F 42.6°F 2.23 in 66.3°F 46.2°F 1.68 in
April 69.1°F 44.5°F 0.99 in 68.9°F 47.6°F 0.87 in
May 73.3°F 48.4°F 0.44 in 69.8°F 54.4°F 0.30 in
June 78.0°F 51.2°F 0.09 in 72.7°F 58.2°F 0.11 in
July 79.6°F 53.8°F 0.00 in 76.5°F 62.1°F 0.05 in
August 81.4°F 54.4°F 0.01 in 78.3°F 62.1°F 0.04 in
September 80.9°F 52.6°F 0.05 in 77.8°F 59.2°F 0.13 in
October 76.7°F 48.0°F 0.62 in 75.0°F 52.6°F 0.64 in
November 66.6°F 41.9°F 1.25 in 70.9°F 43.8°F 0.79 in
December 58.9°F 37.6°F 2.27 in 66.1°F 39.8°F 1.98 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 →