Climate twins of Berthoud, CO

These are the US cities whose 12-month climate pattern most closely matches Berthoud'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
Walsenburg, CO
similarity distance: 1.156 (lower = more similar)
Rank 2 closest
Vona, CO
similarity distance: 1.184 (lower = more similar)
Rank 3 closest
Seibert, CO
similarity distance: 1.184 (lower = more similar)

Side-by-side: Berthoud vs its climate twin

Top match: Walsenburg, CO

Month Berthoud Walsenburg
High Low Precip High Low Precip
January 44.5°F 14.4°F 0.56 in 47.3°F 20.7°F 0.83 in
February 46.8°F 17.1°F 0.57 in 49.3°F 21.5°F 0.82 in
March 56.8°F 26.1°F 1.17 in 57.1°F 27.2°F 1.72 in
April 63.2°F 32.3°F 2.04 in 63.4°F 33.6°F 2.26 in
May 72.7°F 41.4°F 1.97 in 72.5°F 42.7°F 1.82 in
June 83.9°F 50.5°F 1.75 in 83.5°F 51.8°F 1.28 in
July 90.8°F 55.4°F 1.69 in 87.4°F 57.5°F 2.24 in
August 87.8°F 53.7°F 1.95 in 85.1°F 56.2°F 2.15 in
September 80.3°F 45.8°F 1.26 in 79.2°F 48.0°F 0.85 in
October 66.2°F 32.9°F 1.04 in 68.4°F 36.6°F 1.31 in
November 53.5°F 23.5°F 0.75 in 55.9°F 27.7°F 1.00 in
December 44.8°F 14.5°F 0.46 in 46.5°F 20.4°F 1.01 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 →