Climate twins of St. Clairsville, OH
These are the US cities whose 12-month climate pattern most closely matches St. Clairsville'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: St. Clairsville vs its climate twin
Top match: Ridgeley, WV
| Month | St. Clairsville | Ridgeley | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 38.7°F | 21.7°F | 3.44 in | 39.2°F | 22.5°F | 2.79 in |
| February | 41.8°F | 23.1°F | 2.67 in | 43.4°F | 23.9°F | 2.38 in |
| March | 51.2°F | 29.8°F | 3.78 in | 53.0°F | 31.2°F | 3.42 in |
| April | 64.5°F | 39.6°F | 3.52 in | 66.3°F | 40.9°F | 3.41 in |
| May | 73.9°F | 50.1°F | 4.20 in | 74.6°F | 51.2°F | 4.22 in |
| June | 81.4°F | 59.3°F | 4.26 in | 82.5°F | 60.1°F | 3.87 in |
| July | 85.0°F | 63.8°F | 4.09 in | 87.1°F | 64.4°F | 3.73 in |
| August | 84.6°F | 62.7°F | 3.19 in | 85.4°F | 62.7°F | 3.40 in |
| September | 78.7°F | 56.1°F | 3.50 in | 78.5°F | 55.0°F | 3.55 in |
| October | 66.4°F | 44.0°F | 2.94 in | 66.8°F | 43.2°F | 2.82 in |
| November | 53.7°F | 33.7°F | 2.90 in | 53.9°F | 33.5°F | 2.58 in |
| December | 43.2°F | 26.9°F | 3.39 in | 42.9°F | 27.1°F | 3.05 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 →