Climate twins of Napoleon, ND

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

Top match: Lisbon, ND

Month Napoleon Lisbon
High Low Precip High Low Precip
January 19.8°F 0.5°F 0.55 in 18.5°F -0.3°F 0.71 in
February 24.4°F 4.0°F 0.56 in 23.7°F 3.4°F 0.89 in
March 36.7°F 16.4°F 0.93 in 37.1°F 16.2°F 0.96 in
April 52.9°F 28.8°F 1.69 in 53.5°F 29.1°F 1.52 in
May 65.9°F 41.8°F 2.82 in 67.4°F 42.5°F 3.11 in
June 75.4°F 52.8°F 3.83 in 77.1°F 53.8°F 3.40 in
July 81.6°F 57.7°F 3.06 in 82.0°F 58.4°F 2.90 in
August 80.7°F 55.4°F 2.40 in 80.6°F 55.4°F 2.65 in
September 71.1°F 46.1°F 1.79 in 72.1°F 45.7°F 2.40 in
October 55.3°F 32.6°F 1.73 in 56.1°F 32.2°F 2.20 in
November 38.4°F 18.6°F 0.66 in 38.7°F 19.1°F 0.78 in
December 25.0°F 7.5°F 0.71 in 24.6°F 7.2°F 0.75 in

Cities that consider Napoleon their climate twin

These US cities have Napoleon in their top 3 most-similar list — meaning if you were to move from any of these places, Napoleon 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 →