Climate twins of Concord, CA

These are the US cities whose 12-month climate pattern most closely matches Concord'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
El Paso de Robles (Paso Robles), CA
similarity distance: 1.238 (lower = more similar)
Rank 2 closest
Irvine, CA
similarity distance: 1.490 (lower = more similar)
Rank 3 closest
Vista, CA
similarity distance: 1.560 (lower = more similar)

Side-by-side: Concord vs its climate twin

Top match: El Paso de Robles (Paso Robles), CA

Month Concord El Paso de Robles (Paso Robles)
High Low Precip High Low Precip
January 57.6°F 41.2°F 3.21 in 61.9°F 34.2°F 3.44 in
February 62.1°F 43.8°F 3.19 in 63.8°F 36.8°F 3.24 in
March 66.7°F 46.6°F 2.26 in 68.1°F 39.6°F 2.84 in
April 71.2°F 49.1°F 1.12 in 73.0°F 41.4°F 0.81 in
May 77.5°F 53.0°F 0.51 in 79.5°F 46.1°F 0.36 in
June 84.2°F 57.1°F 0.16 in 86.6°F 50.0°F 0.04 in
July 88.0°F 58.7°F 0.00 in 90.5°F 53.4°F 0.10 in
August 87.9°F 59.4°F 0.02 in 92.1°F 52.6°F 0.02 in
September 85.3°F 57.8°F 0.06 in 89.2°F 49.5°F 0.08 in
October 78.1°F 52.6°F 0.73 in 80.6°F 43.4°F 0.66 in
November 66.1°F 45.2°F 1.61 in 69.3°F 36.6°F 1.16 in
December 58.2°F 40.7°F 3.18 in 61.3°F 32.6°F 2.51 in

Cities that consider Concord their climate twin

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

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 →