Climate twins of Humboldt, IA

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

Top match: Buffalo City, WI

Month Humboldt Buffalo City
High Low Precip High Low Precip
January 24.4°F 8.5°F 0.91 in 22.9°F 7.9°F 1.09 in
February 29.3°F 12.4°F 1.04 in 28.5°F 11.4°F 1.12 in
March 42.7°F 24.6°F 2.02 in 41.6°F 24.5°F 2.00 in
April 57.2°F 35.6°F 3.30 in 56.1°F 37.0°F 3.68 in
May 68.3°F 48.6°F 4.80 in 69.0°F 49.5°F 4.58 in
June 77.8°F 59.3°F 5.48 in 79.2°F 59.3°F 5.12 in
July 81.1°F 63.1°F 4.15 in 82.6°F 64.1°F 4.00 in
August 78.8°F 60.2°F 4.55 in 79.9°F 62.0°F 4.51 in
September 72.5°F 51.2°F 3.33 in 71.0°F 54.0°F 3.73 in
October 60.1°F 39.1°F 2.45 in 57.1°F 40.9°F 2.49 in
November 43.4°F 26.1°F 1.61 in 40.8°F 28.0°F 1.93 in
December 29.8°F 14.8°F 1.32 in 28.0°F 15.2°F 1.19 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 →