Climate twins of Holland, OH
These are the US cities whose 12-month climate pattern most closely matches Holland'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: Holland vs its climate twin
Top match: Lakemore, OH
| Month | Holland | Lakemore | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.7°F | 20.3°F | 2.37 in | 36.7°F | 21.0°F | 1.83 in |
| February | 37.8°F | 22.1°F | 2.28 in | 39.6°F | 22.4°F | 1.45 in |
| March | 48.4°F | 29.9°F | 2.61 in | 49.1°F | 29.6°F | 2.48 in |
| April | 61.5°F | 40.3°F | 3.45 in | 62.4°F | 39.8°F | 2.83 in |
| May | 73.3°F | 50.9°F | 3.82 in | 72.9°F | 50.5°F | 3.56 in |
| June | 82.7°F | 60.5°F | 3.45 in | 81.2°F | 59.7°F | 3.67 in |
| July | 86.5°F | 64.2°F | 3.27 in | 85.1°F | 64.0°F | 3.65 in |
| August | 84.1°F | 62.8°F | 3.15 in | 83.6°F | 62.3°F | 3.00 in |
| September | 77.7°F | 55.1°F | 2.93 in | 76.9°F | 54.9°F | 3.18 in |
| October | 65.0°F | 44.3°F | 2.59 in | 64.5°F | 44.3°F | 2.53 in |
| November | 51.1°F | 34.5°F | 2.65 in | 51.7°F | 34.5°F | 2.32 in |
| December | 39.4°F | 26.1°F | 2.44 in | 41.0°F | 26.8°F | 2.01 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 →