Climate twins of Chelsea, MI
These are the US cities whose 12-month climate pattern most closely matches Chelsea'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: Chelsea vs its climate twin
Top match: Hilton, NY
| Month | Chelsea | Hilton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 30.6°F | 16.4°F | 2.41 in | 32.9°F | 18.0°F | 2.43 in |
| February | 34.0°F | 17.4°F | 1.98 in | 34.7°F | 17.2°F | 1.95 in |
| March | 44.3°F | 25.4°F | 2.24 in | 42.2°F | 25.6°F | 2.62 in |
| April | 57.5°F | 36.6°F | 3.01 in | 55.5°F | 35.7°F | 2.97 in |
| May | 69.5°F | 47.6°F | 3.83 in | 67.4°F | 48.0°F | 3.13 in |
| June | 78.8°F | 56.5°F | 3.64 in | 75.4°F | 57.7°F | 3.33 in |
| July | 82.3°F | 60.6°F | 3.45 in | 79.8°F | 62.2°F | 3.54 in |
| August | 80.4°F | 58.9°F | 3.56 in | 79.2°F | 61.4°F | 3.42 in |
| September | 74.1°F | 51.0°F | 2.74 in | 72.8°F | 53.5°F | 3.11 in |
| October | 61.0°F | 40.2°F | 3.14 in | 60.0°F | 42.8°F | 3.38 in |
| November | 47.2°F | 30.8°F | 2.61 in | 48.0°F | 33.0°F | 2.81 in |
| December | 35.9°F | 22.6°F | 2.08 in | 37.8°F | 24.8°F | 2.82 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 →