Climate twins of Watertown, WI

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

Top match: Earlville, IA

Month Watertown Earlville
High Low Precip High Low Precip
January 26.4°F 10.5°F 1.37 in 26.1°F 8.2°F 1.14 in
February 30.3°F 13.3°F 1.35 in 30.6°F 12.0°F 1.35 in
March 42.2°F 24.0°F 1.90 in 43.7°F 23.8°F 2.10 in
April 55.6°F 35.1°F 3.67 in 57.8°F 34.8°F 3.82 in
May 67.8°F 46.9°F 4.19 in 69.6°F 46.9°F 4.49 in
June 77.7°F 57.1°F 5.80 in 79.1°F 57.6°F 6.02 in
July 81.3°F 61.1°F 4.50 in 82.1°F 61.0°F 4.79 in
August 79.5°F 59.0°F 4.11 in 80.4°F 58.1°F 4.13 in
September 72.8°F 50.8°F 3.47 in 74.1°F 49.0°F 3.84 in
October 59.6°F 39.5°F 3.00 in 61.0°F 37.4°F 3.11 in
November 44.6°F 27.9°F 2.14 in 45.1°F 25.7°F 2.20 in
December 32.0°F 17.3°F 1.75 in 32.0°F 15.2°F 1.58 in

Cities that consider Watertown their climate twin

These US cities have Watertown in their top 3 most-similar list — meaning if you were to move from any of these places, Watertown would feel familiar.

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 →