Climate twins of Smithfield, UT

These are the US cities whose 12-month climate pattern most closely matches Smithfield'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
New Castle, CO
similarity distance: 1.048 (lower = more similar)
Rank 2 closest
Glenwood Springs, CO
similarity distance: 1.048 (lower = more similar)
Rank 3 closest
Ten Sleep, WY
similarity distance: 1.118 (lower = more similar)

Side-by-side: Smithfield vs its climate twin

Top match: New Castle, CO

Month Smithfield New Castle
High Low Precip High Low Precip
January 31.8°F 15.1°F 1.42 in 36.2°F 12.3°F 1.13 in
February 37.1°F 18.4°F 1.27 in 41.6°F 19.0°F 1.16 in
March 50.2°F 28.7°F 1.66 in 53.0°F 26.1°F 1.18 in
April 59.5°F 34.6°F 1.96 in 60.0°F 32.0°F 1.63 in
May 69.2°F 41.5°F 2.09 in 70.6°F 39.6°F 1.69 in
June 80.6°F 47.2°F 1.16 in 82.4°F 46.3°F 0.96 in
July 91.0°F 55.1°F 0.32 in 88.6°F 53.4°F 1.07 in
August 89.0°F 53.0°F 0.69 in 86.0°F 52.1°F 1.27 in
September 77.9°F 44.0°F 1.24 in 78.2°F 43.8°F 1.63 in
October 62.8°F 33.5°F 1.49 in 64.8°F 33.3°F 1.56 in
November 47.0°F 25.2°F 1.19 in 49.1°F 23.6°F 1.06 in
December 33.2°F 16.9°F 1.11 in 36.4°F 15.1°F 1.19 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 →