Climate twins of North Royalton, OH
These are the US cities whose 12-month climate pattern most closely matches North Royalton'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: North Royalton vs its climate twin
Top match: Williamsport, PA
| Month | North Royalton | Williamsport | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 35.8°F | 22.3°F | 2.99 in | 35.6°F | 20.5°F | 2.99 in |
| February | 38.5°F | 23.7°F | 2.49 in | 39.1°F | 21.9°F | 2.39 in |
| March | 47.1°F | 30.7°F | 3.06 in | 48.9°F | 29.1°F | 3.29 in |
| April | 60.1°F | 40.8°F | 3.75 in | 62.5°F | 39.2°F | 3.62 in |
| May | 71.1°F | 51.4°F | 3.79 in | 73.5°F | 49.7°F | 3.83 in |
| June | 79.8°F | 61.1°F | 3.83 in | 81.4°F | 58.9°F | 3.92 in |
| July | 83.7°F | 65.3°F | 3.67 in | 85.6°F | 63.2°F | 4.30 in |
| August | 82.0°F | 63.9°F | 3.56 in | 83.7°F | 62.2°F | 3.80 in |
| September | 75.6°F | 57.1°F | 3.93 in | 76.3°F | 54.7°F | 4.54 in |
| October | 63.7°F | 46.5°F | 3.60 in | 63.6°F | 43.2°F | 3.69 in |
| November | 51.3°F | 36.7°F | 3.37 in | 50.8°F | 33.3°F | 3.09 in |
| December | 40.4°F | 28.2°F | 2.99 in | 39.8°F | 25.7°F | 3.26 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 →