Climate twins of Coatesville, PA
These are the US cities whose 12-month climate pattern most closely matches Coatesville'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: Coatesville vs its climate twin
Top match: Mamaroneck, NY
| Month | Coatesville | Mamaroneck | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 38.5°F | 21.9°F | 4.05 in | 39.8°F | 23.1°F | 3.87 in |
| February | 41.5°F | 23.2°F | 3.34 in | 42.9°F | 24.5°F | 3.30 in |
| March | 50.3°F | 30.5°F | 4.80 in | 50.7°F | 31.0°F | 4.37 in |
| April | 62.7°F | 40.1°F | 4.10 in | 62.8°F | 40.1°F | 4.26 in |
| May | 72.8°F | 50.3°F | 4.02 in | 73.0°F | 49.5°F | 4.27 in |
| June | 80.8°F | 59.0°F | 4.54 in | 80.8°F | 58.8°F | 4.58 in |
| July | 85.4°F | 64.6°F | 4.55 in | 85.6°F | 64.4°F | 4.53 in |
| August | 83.4°F | 62.8°F | 4.58 in | 83.9°F | 63.2°F | 4.44 in |
| September | 76.5°F | 55.7°F | 5.17 in | 76.9°F | 56.1°F | 4.61 in |
| October | 64.9°F | 43.6°F | 4.57 in | 65.4°F | 45.1°F | 4.43 in |
| November | 53.6°F | 34.0°F | 3.61 in | 54.4°F | 36.0°F | 3.88 in |
| December | 43.1°F | 26.9°F | 4.79 in | 44.5°F | 28.6°F | 4.70 in |
Cities that consider Coatesville their climate twin
These US cities have Coatesville in their top 3 most-similar list — meaning if you were to move from any of these places, Coatesville would feel familiar.
- Scarsdale, NY (ranks Coatesville #1)
- Elmsford, NY (ranks Coatesville #1)
- Larchmont, NY (ranks Coatesville #1)
- Mamaroneck, NY (ranks Coatesville #1)
- New Rochelle, NY (ranks Coatesville #1)
- Northport, NY (ranks Coatesville #1)
- Lloyd Harbor, NY (ranks Coatesville #1)
- Huntington Bay, NY (ranks Coatesville #1)
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 →