Climate twins of Circle, MT

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

Top match: Buffalo, SD

Month Circle Buffalo
High Low Precip High Low Precip
January 28.5°F 7.8°F 0.40 in 31.6°F 10.7°F 0.31 in
February 32.6°F 11.5°F 0.37 in 33.8°F 12.9°F 0.41 in
March 45.5°F 21.6°F 0.49 in 44.9°F 22.1°F 0.53 in
April 58.1°F 31.7°F 1.38 in 55.6°F 31.3°F 1.44 in
May 68.3°F 41.7°F 2.55 in 66.3°F 41.9°F 2.47 in
June 77.7°F 50.9°F 2.64 in 77.0°F 51.6°F 2.11 in
July 87.1°F 57.1°F 2.14 in 86.1°F 58.1°F 2.16 in
August 86.8°F 55.4°F 1.40 in 85.0°F 55.9°F 1.13 in
September 75.5°F 45.2°F 1.33 in 74.9°F 46.3°F 1.13 in
October 58.8°F 33.1°F 0.93 in 58.1°F 33.7°F 1.09 in
November 42.8°F 21.2°F 0.36 in 44.3°F 21.5°F 0.32 in
December 31.5°F 11.0°F 0.46 in 33.9°F 13.3°F 0.35 in

Cities that consider Circle their climate twin

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