Climate twins of Hartford, CT

These are the US cities whose 12-month climate pattern most closely matches Hartford'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.

Side-by-side: Hartford vs its climate twin

Top match: Brecksville, OH

Month Hartford Brecksville
High Low Precip High Low Precip
January 36.8°F 20.3°F 2.94 in 35.8°F 22.3°F 2.99 in
February 39.5°F 22.1°F 2.57 in 38.5°F 23.7°F 2.49 in
March 47.6°F 29.6°F 3.51 in 47.1°F 30.7°F 3.06 in
April 60.1°F 40.0°F 3.79 in 60.1°F 40.8°F 3.75 in
May 70.9°F 50.1°F 3.43 in 71.1°F 51.4°F 3.79 in
June 79.6°F 59.8°F 3.88 in 79.8°F 61.1°F 3.83 in
July 84.6°F 65.7°F 3.87 in 83.7°F 65.3°F 3.67 in
August 83.0°F 64.2°F 3.48 in 82.0°F 63.9°F 3.56 in
September 75.6°F 56.0°F 3.97 in 75.6°F 57.1°F 3.93 in
October 63.7°F 44.3°F 4.20 in 63.7°F 46.5°F 3.60 in
November 52.1°F 34.6°F 3.44 in 51.3°F 36.7°F 3.37 in
December 41.7°F 25.9°F 3.75 in 40.4°F 28.2°F 2.99 in

Cities that consider Hartford their climate twin

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