Climate twins of Ronan, MT

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

Rank 1 closest
Three Forks, MT
similarity distance: 1.097 (lower = more similar)
Rank 2 closest
Downey, ID
similarity distance: 1.171 (lower = more similar)
Rank 3 closest
Henefer, UT
similarity distance: 1.172 (lower = more similar)

Side-by-side: Ronan vs its climate twin

Top match: Three Forks, MT

Month Ronan Three Forks
High Low Precip High Low Precip
January 33.4°F 22.0°F 0.94 in 33.4°F 15.5°F 0.40 in
February 36.9°F 22.0°F 0.79 in 37.1°F 17.7°F 0.29 in
March 47.3°F 28.2°F 0.89 in 47.8°F 25.9°F 0.66 in
April 56.2°F 33.6°F 1.43 in 56.2°F 32.7°F 1.47 in
May 65.8°F 40.8°F 1.99 in 65.7°F 41.5°F 2.18 in
June 72.3°F 47.3°F 2.44 in 73.9°F 48.5°F 2.36 in
July 82.8°F 53.3°F 0.84 in 84.7°F 53.7°F 1.37 in
August 82.2°F 52.5°F 0.76 in 83.7°F 51.0°F 0.98 in
September 70.9°F 45.6°F 1.19 in 73.3°F 43.3°F 1.10 in
October 55.6°F 35.7°F 1.59 in 58.2°F 33.4°F 0.92 in
November 41.3°F 27.3°F 1.22 in 42.4°F 22.9°F 0.63 in
December 33.1°F 22.0°F 0.93 in 32.9°F 15.2°F 0.67 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 →