Climate twins of Plainfield, WI

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

Top match: Stewartville, MN

Month Plainfield Stewartville
High Low Precip High Low Precip
January 24.9°F 6.9°F 1.14 in 22.5°F 7.0°F 0.99 in
February 29.6°F 9.7°F 0.97 in 26.7°F 10.7°F 1.02 in
March 41.3°F 21.2°F 1.86 in 39.9°F 23.4°F 2.02 in
April 55.1°F 32.9°F 3.57 in 55.3°F 35.1°F 3.52 in
May 68.1°F 45.2°F 4.19 in 68.0°F 47.1°F 4.35 in
June 77.4°F 55.2°F 4.95 in 77.6°F 57.5°F 5.35 in
July 81.5°F 58.8°F 4.15 in 80.3°F 60.8°F 4.19 in
August 79.3°F 57.3°F 4.02 in 78.0°F 58.3°F 4.12 in
September 71.6°F 49.3°F 3.31 in 71.8°F 50.4°F 3.60 in
October 58.1°F 37.4°F 2.71 in 57.9°F 38.0°F 2.43 in
November 42.6°F 25.6°F 1.98 in 41.7°F 25.6°F 1.80 in
December 29.9°F 13.8°F 1.42 in 28.0°F 13.6°F 1.28 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 →