Climate twins of Richmond, VA
These are the US cities whose 12-month climate pattern most closely matches Richmond'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: Richmond vs its climate twin
Top match: Stokesdale, NC
| Month | Richmond | Stokesdale | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 47.8°F | 28.8°F | 3.23 in | 49.3°F | 30.1°F | 3.39 in |
| February | 51.6°F | 30.4°F | 2.61 in | 53.3°F | 32.7°F | 2.81 in |
| March | 59.6°F | 37.2°F | 4.00 in | 61.3°F | 39.3°F | 3.72 in |
| April | 70.4°F | 46.4°F | 3.18 in | 71.0°F | 47.9°F | 3.78 in |
| May | 77.8°F | 55.7°F | 4.00 in | 78.0°F | 57.1°F | 3.49 in |
| June | 85.6°F | 64.5°F | 4.64 in | 85.2°F | 65.4°F | 4.09 in |
| July | 89.5°F | 69.2°F | 4.37 in | 88.5°F | 69.3°F | 4.18 in |
| August | 87.5°F | 67.6°F | 4.90 in | 86.6°F | 68.0°F | 4.36 in |
| September | 81.2°F | 61.1°F | 4.61 in | 80.4°F | 61.5°F | 4.59 in |
| October | 70.9°F | 49.0°F | 3.39 in | 71.0°F | 49.4°F | 3.10 in |
| November | 60.4°F | 38.8°F | 3.06 in | 60.6°F | 38.9°F | 3.27 in |
| December | 51.5°F | 32.1°F | 3.51 in | 52.0°F | 33.0°F | 3.17 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 →