Climate twins of Columbia, TN
These are the US cities whose 12-month climate pattern most closely matches Columbia'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: Columbia vs its climate twin
Top match: Dayton, TN
| Month | Columbia | Dayton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 47.9°F | 26.9°F | 4.60 in | 47.4°F | 28.3°F | 5.21 in |
| February | 52.4°F | 29.1°F | 5.11 in | 52.0°F | 31.4°F | 5.09 in |
| March | 61.5°F | 36.0°F | 5.43 in | 60.9°F | 37.6°F | 5.33 in |
| April | 71.3°F | 44.2°F | 5.10 in | 70.5°F | 46.1°F | 5.38 in |
| May | 78.8°F | 53.5°F | 5.17 in | 78.0°F | 55.0°F | 4.79 in |
| June | 85.8°F | 62.3°F | 4.98 in | 84.7°F | 63.4°F | 4.50 in |
| July | 88.8°F | 66.6°F | 4.75 in | 87.6°F | 67.0°F | 5.29 in |
| August | 88.4°F | 64.9°F | 4.09 in | 87.4°F | 65.9°F | 3.88 in |
| September | 83.3°F | 57.9°F | 4.25 in | 82.1°F | 59.6°F | 4.82 in |
| October | 72.1°F | 45.3°F | 3.78 in | 71.2°F | 47.5°F | 3.62 in |
| November | 60.3°F | 34.9°F | 3.87 in | 59.4°F | 37.0°F | 4.79 in |
| December | 51.1°F | 29.6°F | 5.64 in | 50.3°F | 31.3°F | 6.04 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 →