Climate twins of Franklin, NC
These are the US cities whose 12-month climate pattern most closely matches Franklin'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: Franklin vs its climate twin
Top match: Mount Vernon, KY
| Month | Franklin | Mount Vernon | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 48.3°F | 26.1°F | 5.34 in | 42.3°F | 24.5°F | 4.22 in |
| February | 52.6°F | 28.8°F | 4.44 in | 46.6°F | 27.3°F | 4.02 in |
| March | 60.1°F | 35.1°F | 4.91 in | 55.6°F | 34.6°F | 4.86 in |
| April | 69.0°F | 41.8°F | 4.97 in | 67.0°F | 43.8°F | 4.79 in |
| May | 75.6°F | 50.9°F | 4.46 in | 74.5°F | 53.7°F | 4.86 in |
| June | 81.5°F | 59.6°F | 5.00 in | 81.5°F | 62.0°F | 4.79 in |
| July | 84.3°F | 63.7°F | 4.09 in | 84.4°F | 66.0°F | 4.59 in |
| August | 83.3°F | 62.9°F | 4.69 in | 84.2°F | 63.9°F | 3.65 in |
| September | 78.5°F | 56.7°F | 4.33 in | 79.3°F | 56.6°F | 3.54 in |
| October | 69.8°F | 44.4°F | 3.76 in | 68.5°F | 44.8°F | 3.59 in |
| November | 59.9°F | 33.1°F | 4.32 in | 56.1°F | 35.0°F | 3.50 in |
| December | 51.2°F | 28.9°F | 5.19 in | 46.3°F | 29.0°F | 4.94 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 →