Climate twins of Gravois Mills, MO

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

Top match: Lake St. Louis, MO

Month Gravois Mills Lake St. Louis
High Low Precip High Low Precip
January 40.5°F 22.2°F 1.76 in 39.3°F 21.2°F 2.61 in
February 45.5°F 25.9°F 2.59 in 44.8°F 24.4°F 2.43 in
March 56.5°F 35.0°F 3.30 in 55.2°F 33.3°F 3.74 in
April 66.8°F 45.3°F 4.62 in 67.0°F 43.8°F 4.70 in
May 75.2°F 55.8°F 5.35 in 75.7°F 54.2°F 5.09 in
June 83.0°F 64.8°F 5.33 in 83.7°F 63.3°F 4.72 in
July 87.5°F 69.1°F 4.27 in 87.5°F 67.3°F 3.92 in
August 86.5°F 67.1°F 3.62 in 86.7°F 65.4°F 3.58 in
September 78.8°F 58.5°F 4.27 in 79.8°F 57.0°F 3.50 in
October 67.8°F 46.9°F 3.74 in 68.3°F 45.6°F 3.37 in
November 54.9°F 35.5°F 3.61 in 55.4°F 34.9°F 3.69 in
December 44.3°F 26.3°F 2.48 in 44.0°F 25.9°F 3.07 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 →