Climate twins of Wall, SD

These are the US cities whose 12-month climate pattern most closely matches Wall'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
Oshkosh, NE
similarity distance: 0.941 (lower = more similar)
Rank 2 closest
Broadus, MT
similarity distance: 1.000 (lower = more similar)
Rank 3 closest
Hartville, WY
similarity distance: 1.028 (lower = more similar)

Side-by-side: Wall vs its climate twin

Top match: Oshkosh, NE

Month Wall Oshkosh
High Low Precip High Low Precip
January 35.1°F 9.4°F 0.28 in 39.7°F 12.5°F 0.25 in
February 39.0°F 12.6°F 0.53 in 43.2°F 15.4°F 0.38 in
March 50.2°F 22.2°F 0.87 in 53.4°F 23.9°F 0.93 in
April 60.1°F 32.6°F 1.90 in 61.1°F 32.4°F 2.00 in
May 69.7°F 43.5°F 3.55 in 70.3°F 43.6°F 3.02 in
June 80.4°F 53.9°F 2.73 in 82.1°F 54.1°F 2.98 in
July 89.0°F 60.1°F 2.32 in 88.3°F 60.4°F 2.75 in
August 88.3°F 58.0°F 1.56 in 86.4°F 57.8°F 1.93 in
September 79.1°F 47.3°F 1.19 in 78.7°F 47.7°F 1.52 in
October 63.1°F 33.6°F 1.76 in 64.4°F 33.5°F 1.33 in
November 49.0°F 21.0°F 0.64 in 51.4°F 21.6°F 0.46 in
December 37.4°F 11.7°F 0.32 in 40.6°F 13.0°F 0.36 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 →