Climate twins of Callahan, FL

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

Top match: North Charleston, SC

Month Callahan North Charleston
High Low Precip High Low Precip
January 65.5°F 42.9°F 3.28 in 60.2°F 38.9°F 3.37 in
February 68.9°F 46.1°F 2.86 in 63.8°F 41.6°F 3.05 in
March 74.3°F 50.6°F 3.29 in 70.1°F 47.3°F 3.35 in
April 79.8°F 56.4°F 2.93 in 77.1°F 54.5°F 3.29 in
May 85.9°F 63.9°F 3.42 in 83.6°F 63.0°F 3.32 in
June 89.9°F 70.7°F 7.60 in 88.5°F 70.4°F 6.21 in
July 91.9°F 73.2°F 6.77 in 91.3°F 73.7°F 6.60 in
August 90.8°F 73.4°F 6.88 in 89.8°F 73.1°F 6.97 in
September 87.2°F 70.5°F 7.56 in 85.4°F 68.3°F 6.01 in
October 80.9°F 61.5°F 4.03 in 77.9°F 57.7°F 4.33 in
November 73.2°F 51.3°F 2.00 in 69.4°F 47.1°F 2.66 in
December 67.5°F 45.8°F 2.78 in 62.7°F 41.6°F 3.35 in

Cities that consider Callahan their climate twin

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