Climate twins of Erie, PA

These are the US cities whose 12-month climate pattern most closely matches Erie'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
Waltham, MA
similarity distance: 1.016 (lower = more similar)
Rank 2 closest
Middletown, CT
similarity distance: 1.045 (lower = more similar)
Rank 3 closest
Meriden, CT
similarity distance: 1.045 (lower = more similar)

Side-by-side: Erie vs its climate twin

Top match: Waltham, MA

Month Erie Waltham
High Low Precip High Low Precip
January 35.2°F 21.3°F 3.41 in 36.8°F 18.2°F 2.90 in
February 36.5°F 21.4°F 2.52 in 39.4°F 19.3°F 2.69 in
March 44.3°F 27.9°F 3.08 in 47.5°F 27.2°F 3.85 in
April 56.8°F 38.0°F 3.47 in 59.9°F 37.1°F 3.84 in
May 68.3°F 49.3°F 3.50 in 70.4°F 46.7°F 3.36 in
June 77.1°F 59.4°F 3.70 in 79.4°F 56.2°F 3.72 in
July 81.1°F 64.2°F 3.33 in 85.1°F 62.0°F 3.51 in
August 79.9°F 63.2°F 3.35 in 83.6°F 60.3°F 3.47 in
September 73.7°F 56.7°F 4.32 in 75.7°F 51.8°F 3.54 in
October 62.3°F 46.3°F 4.38 in 63.6°F 40.8°F 4.24 in
November 50.5°F 36.7°F 3.75 in 52.4°F 32.4°F 3.72 in
December 40.2°F 28.0°F 4.17 in 42.0°F 24.0°F 3.76 in

Cities that consider Erie their climate twin

These US cities have Erie in their top 3 most-similar list — meaning if you were to move from any of these places, Erie 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 →