Climate twins of Gifford, IL

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

Top match: Ipava, IL

Month Gifford Ipava
High Low Precip High Low Precip
January 34.4°F 15.8°F 2.54 in 33.5°F 16.4°F 2.20 in
February 39.6°F 19.6°F 2.01 in 38.8°F 20.4°F 2.18 in
March 51.4°F 29.3°F 2.58 in 51.2°F 30.2°F 2.72 in
April 64.3°F 39.6°F 3.98 in 63.8°F 40.9°F 4.22 in
May 75.4°F 51.3°F 4.33 in 74.5°F 52.8°F 5.08 in
June 84.9°F 61.7°F 4.61 in 84.6°F 61.6°F 4.73 in
July 87.5°F 64.1°F 4.44 in 88.1°F 65.1°F 4.18 in
August 85.9°F 61.6°F 3.86 in 86.0°F 62.9°F 4.02 in
September 80.7°F 54.3°F 3.28 in 80.4°F 53.5°F 3.26 in
October 67.3°F 42.1°F 3.32 in 67.8°F 42.0°F 3.37 in
November 52.3°F 31.4°F 3.19 in 52.4°F 31.8°F 2.73 in
December 39.8°F 22.1°F 2.21 in 39.1°F 21.8°F 2.35 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 →