Climate twins of Colusa, CA

These are the US cities whose 12-month climate pattern most closely matches Colusa'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
Soledad, CA
similarity distance: 1.726 (lower = more similar)
Rank 2 closest
El Paso de Robles (Paso Robles), CA
similarity distance: 1.757 (lower = more similar)
Rank 3 closest
Exeter, CA
similarity distance: 1.758 (lower = more similar)

Side-by-side: Colusa vs its climate twin

Top match: Soledad, CA

Month Colusa Soledad
High Low Precip High Low Precip
January 54.6°F 38.2°F 3.58 in 62.6°F 34.0°F 3.46 in
February 60.2°F 41.1°F 2.97 in 63.7°F 35.6°F 3.45 in
March 66.5°F 43.8°F 2.19 in 67.5°F 37.7°F 2.80 in
April 73.4°F 46.1°F 1.00 in 72.3°F 39.4°F 0.96 in
May 81.1°F 53.4°F 0.84 in 80.0°F 43.1°F 0.57 in
June 88.2°F 58.7°F 0.51 in 88.8°F 46.6°F 0.13 in
July 92.4°F 59.9°F 0.01 in 95.9°F 50.4°F 0.04 in
August 91.7°F 58.1°F 0.03 in 95.8°F 50.3°F 0.02 in
September 89.1°F 54.4°F 0.11 in 91.7°F 48.1°F 0.06 in
October 79.0°F 47.9°F 0.87 in 82.5°F 42.7°F 0.73 in
November 64.1°F 41.8°F 1.91 in 70.4°F 36.7°F 1.27 in
December 54.5°F 37.7°F 3.17 in 62.0°F 33.4°F 3.08 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 →