Climate twins of Copemish, MI
These are the US cities whose 12-month climate pattern most closely matches Copemish'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: Copemish vs its climate twin
Top match: Cape Vincent, NY
| Month | Copemish | Cape Vincent | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 29.3°F | 17.0°F | 2.47 in | 29.8°F | 10.0°F | 2.86 in |
| February | 31.4°F | 17.3°F | 1.75 in | 31.4°F | 10.7°F | 2.18 in |
| March | 41.5°F | 23.3°F | 2.14 in | 40.0°F | 20.7°F | 2.37 in |
| April | 53.6°F | 33.3°F | 3.47 in | 53.7°F | 32.5°F | 3.07 in |
| May | 66.4°F | 44.3°F | 3.16 in | 66.2°F | 43.7°F | 2.97 in |
| June | 75.6°F | 53.6°F | 3.26 in | 74.5°F | 53.1°F | 3.09 in |
| July | 79.5°F | 58.8°F | 2.98 in | 79.2°F | 58.8°F | 3.01 in |
| August | 78.1°F | 57.9°F | 3.43 in | 78.2°F | 56.7°F | 3.20 in |
| September | 71.4°F | 51.6°F | 3.50 in | 71.2°F | 48.8°F | 3.56 in |
| October | 58.1°F | 41.3°F | 4.55 in | 58.4°F | 39.2°F | 4.22 in |
| November | 44.7°F | 31.7°F | 3.09 in | 46.6°F | 29.5°F | 3.40 in |
| December | 34.0°F | 22.9°F | 2.36 in | 35.5°F | 19.0°F | 3.14 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 →