Climate twins of Franklin, NH

These are the US cities whose 12-month climate pattern most closely matches Franklin'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: Franklin vs its climate twin

Top match: Waterville, ME

Month Franklin Waterville
High Low Precip High Low Precip
January 29.7°F 8.8°F 3.13 in 28.5°F 8.8°F 3.12 in
February 33.1°F 10.2°F 2.80 in 31.8°F 9.9°F 2.61 in
March 41.9°F 19.8°F 3.31 in 40.3°F 20.5°F 3.27 in
April 55.7°F 30.7°F 3.49 in 53.5°F 32.2°F 3.73 in
May 67.7°F 42.7°F 3.62 in 65.8°F 43.2°F 3.33 in
June 76.1°F 52.2°F 4.28 in 74.7°F 53.1°F 4.03 in
July 81.8°F 57.9°F 4.20 in 80.1°F 59.1°F 3.37 in
August 79.6°F 55.9°F 4.07 in 79.5°F 57.4°F 3.39 in
September 71.7°F 48.1°F 3.72 in 71.7°F 49.5°F 3.82 in
October 59.1°F 37.2°F 4.93 in 58.7°F 38.4°F 4.90 in
November 45.8°F 26.4°F 3.93 in 46.1°F 28.7°F 3.87 in
December 34.7°F 16.9°F 3.99 in 34.5°F 17.2°F 3.92 in

Cities that consider Franklin their climate twin

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