Climate twins of Wessington Springs, SD

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

Top match: St. Leo, MN

Month Wessington Springs St. Leo
High Low Precip High Low Precip
January 25.4°F 7.0°F 0.64 in 23.4°F 5.4°F 0.84 in
February 30.2°F 10.6°F 0.73 in 27.8°F 9.4°F 0.90 in
March 42.3°F 21.6°F 1.29 in 39.6°F 21.0°F 1.52 in
April 55.6°F 33.3°F 3.02 in 54.6°F 33.3°F 2.80 in
May 67.8°F 45.9°F 3.67 in 68.1°F 46.2°F 3.43 in
June 78.1°F 56.3°F 3.85 in 78.3°F 57.1°F 4.11 in
July 84.4°F 61.6°F 3.09 in 83.0°F 61.5°F 3.33 in
August 82.3°F 59.4°F 2.90 in 80.7°F 58.9°F 3.35 in
September 74.2°F 50.6°F 2.73 in 73.2°F 50.0°F 2.80 in
October 58.7°F 36.6°F 2.09 in 58.7°F 36.8°F 2.41 in
November 43.1°F 23.4°F 0.93 in 42.0°F 23.8°F 1.35 in
December 29.7°F 12.1°F 0.72 in 28.5°F 12.0°F 1.11 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 →