Climate twins of Port Sanilac, MI

These are the US cities whose 12-month climate pattern most closely matches Port Sanilac'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.

Rank 1 closest
Harrison, MI
similarity distance: 0.910 (lower = more similar)
Rank 2 closest
Newaygo, MI
similarity distance: 0.976 (lower = more similar)
Rank 3 closest
Fremont, MI
similarity distance: 0.976 (lower = more similar)

Side-by-side: Port Sanilac vs its climate twin

Top match: Harrison, MI

Month Port Sanilac Harrison
High Low Precip High Low Precip
January 29.9°F 16.1°F 2.58 in 29.2°F 12.7°F 2.15 in
February 32.0°F 16.2°F 2.00 in 32.0°F 12.5°F 1.70 in
March 40.1°F 23.9°F 2.05 in 42.6°F 20.4°F 2.05 in
April 51.6°F 33.7°F 3.37 in 55.5°F 31.0°F 3.53 in
May 63.0°F 44.7°F 3.93 in 68.4°F 42.7°F 3.78 in
June 72.9°F 54.8°F 3.70 in 78.1°F 52.8°F 3.46 in
July 78.3°F 60.0°F 3.20 in 82.0°F 57.1°F 3.20 in
August 77.6°F 59.5°F 3.10 in 79.9°F 55.2°F 3.39 in
September 71.9°F 52.7°F 3.30 in 72.7°F 47.4°F 2.79 in
October 59.1°F 42.0°F 3.33 in 59.5°F 37.0°F 3.24 in
November 46.5°F 32.0°F 2.51 in 45.6°F 28.3°F 2.53 in
December 35.2°F 23.2°F 2.28 in 34.3°F 19.9°F 2.20 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 →