Climate twins of Caswell Beach, NC

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

Top match: Windsor, NC

Month Caswell Beach Windsor
High Low Precip High Low Precip
January 60.0°F 35.5°F 3.70 in 51.8°F 33.1°F 3.69 in
February 62.5°F 37.6°F 3.32 in 54.9°F 35.4°F 3.22 in
March 68.2°F 42.7°F 4.03 in 62.0°F 41.7°F 4.13 in
April 75.8°F 50.9°F 3.08 in 71.4°F 50.1°F 3.72 in
May 82.5°F 60.0°F 3.44 in 78.2°F 58.8°F 3.69 in
June 88.4°F 69.0°F 4.02 in 85.3°F 67.3°F 5.13 in
July 91.6°F 72.8°F 5.55 in 88.5°F 71.4°F 5.75 in
August 90.4°F 71.2°F 6.77 in 86.9°F 69.9°F 5.70 in
September 86.5°F 66.0°F 8.16 in 81.8°F 64.3°F 6.92 in
October 78.9°F 54.4°F 5.41 in 73.0°F 52.1°F 4.29 in
November 69.9°F 44.3°F 3.42 in 63.1°F 42.2°F 3.39 in
December 62.9°F 38.0°F 3.74 in 55.3°F 36.3°F 3.57 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 →