Climate twins of Fort Benton, MT

These are the US cities whose 12-month climate pattern most closely matches Fort Benton'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
Roundup, MT
similarity distance: 0.787 (lower = more similar)
Rank 2 closest
Fromberg, MT
similarity distance: 0.836 (lower = more similar)
Rank 3 closest
Bridger, MT
similarity distance: 0.836 (lower = more similar)

Side-by-side: Fort Benton vs its climate twin

Top match: Roundup, MT

Month Fort Benton Roundup
High Low Precip High Low Precip
January 34.6°F 10.1°F 0.52 in 37.2°F 13.1°F 0.37 in
February 38.1°F 12.6°F 0.44 in 40.7°F 14.9°F 0.42 in
March 48.2°F 20.3°F 0.56 in 50.6°F 22.1°F 0.71 in
April 58.6°F 30.6°F 1.48 in 59.9°F 30.0°F 1.71 in
May 68.3°F 40.6°F 2.08 in 69.1°F 39.3°F 2.55 in
June 76.3°F 48.6°F 2.62 in 78.3°F 47.8°F 2.89 in
July 86.4°F 54.1°F 1.19 in 88.9°F 53.5°F 1.70 in
August 85.5°F 52.1°F 1.16 in 87.9°F 51.1°F 1.21 in
September 74.2°F 42.3°F 1.20 in 76.9°F 42.4°F 1.20 in
October 59.9°F 30.5°F 0.92 in 60.9°F 31.7°F 1.22 in
November 46.5°F 21.0°F 0.58 in 46.6°F 21.8°F 0.49 in
December 36.7°F 13.1°F 0.47 in 37.2°F 14.2°F 0.41 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 →