Climate twins of Marblehead, OH
These are the US cities whose 12-month climate pattern most closely matches Marblehead'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: Marblehead vs its climate twin
Top match: Aliquippa, PA
| Month | Marblehead | Aliquippa | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.4°F | 21.8°F | 1.90 in | 35.5°F | 20.8°F | 2.59 in |
| February | 37.0°F | 23.4°F | 1.77 in | 39.3°F | 22.4°F | 2.68 in |
| March | 45.0°F | 30.9°F | 2.56 in | 47.7°F | 28.4°F | 3.20 in |
| April | 57.3°F | 41.3°F | 3.76 in | 61.4°F | 39.6°F | 3.59 in |
| May | 68.5°F | 53.2°F | 3.25 in | 71.8°F | 50.6°F | 3.55 in |
| June | 78.1°F | 63.4°F | 3.67 in | 79.7°F | 59.7°F | 4.22 in |
| July | 82.3°F | 67.2°F | 3.55 in | 83.7°F | 64.1°F | 3.86 in |
| August | 80.5°F | 65.8°F | 3.02 in | 82.7°F | 62.6°F | 3.16 in |
| September | 74.5°F | 58.9°F | 3.07 in | 75.7°F | 55.9°F | 3.45 in |
| October | 63.0°F | 47.6°F | 2.72 in | 63.5°F | 44.8°F | 2.78 in |
| November | 50.1°F | 36.8°F | 2.64 in | 50.4°F | 33.8°F | 2.68 in |
| December | 39.3°F | 27.8°F | 2.12 in | 40.4°F | 26.9°F | 2.79 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 →