Climate twins of Cortland, OH
These are the US cities whose 12-month climate pattern most closely matches Cortland'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: Cortland vs its climate twin
Top match: Altoona, PA
| Month | Cortland | Altoona | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.8°F | 17.6°F | 2.87 in | 33.8°F | 18.8°F | 2.94 in |
| February | 37.5°F | 18.3°F | 2.25 in | 37.1°F | 20.4°F | 2.65 in |
| March | 45.9°F | 24.9°F | 3.10 in | 46.0°F | 27.8°F | 3.49 in |
| April | 59.2°F | 35.5°F | 3.80 in | 59.6°F | 38.5°F | 3.78 in |
| May | 70.6°F | 46.4°F | 4.20 in | 69.5°F | 48.6°F | 4.41 in |
| June | 77.8°F | 55.9°F | 4.26 in | 77.3°F | 57.0°F | 4.24 in |
| July | 82.1°F | 60.0°F | 4.78 in | 81.4°F | 61.3°F | 4.18 in |
| August | 80.7°F | 57.9°F | 3.59 in | 79.8°F | 60.0°F | 3.86 in |
| September | 74.6°F | 51.4°F | 4.27 in | 72.6°F | 53.2°F | 4.33 in |
| October | 62.5°F | 40.5°F | 3.63 in | 61.3°F | 42.0°F | 3.84 in |
| November | 50.3°F | 31.9°F | 2.97 in | 48.8°F | 32.6°F | 3.63 in |
| December | 40.0°F | 24.4°F | 2.95 in | 38.1°F | 24.3°F | 3.37 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 →