Climate twins of South Boston, VA
These are the US cities whose 12-month climate pattern most closely matches South Boston'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: South Boston vs its climate twin
Top match: Morningside, MD
| Month | South Boston | Morningside | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 50.7°F | 26.5°F | 3.56 in | 43.7°F | 27.4°F | 3.08 in |
| February | 54.0°F | 28.2°F | 2.95 in | 47.5°F | 28.3°F | 2.89 in |
| March | 61.9°F | 34.2°F | 4.03 in | 55.8°F | 35.0°F | 4.04 in |
| April | 71.8°F | 43.3°F | 3.67 in | 67.4°F | 44.7°F | 3.38 in |
| May | 78.7°F | 53.4°F | 4.35 in | 75.7°F | 54.7°F | 4.45 in |
| June | 86.2°F | 62.5°F | 4.88 in | 84.4°F | 63.8°F | 4.85 in |
| July | 90.0°F | 67.4°F | 4.01 in | 88.0°F | 68.8°F | 4.96 in |
| August | 88.3°F | 65.9°F | 3.82 in | 86.5°F | 67.3°F | 4.16 in |
| September | 82.6°F | 59.0°F | 4.69 in | 80.1°F | 60.5°F | 4.37 in |
| October | 72.8°F | 45.7°F | 3.43 in | 68.3°F | 48.2°F | 3.75 in |
| November | 62.6°F | 34.7°F | 3.40 in | 57.2°F | 38.5°F | 3.13 in |
| December | 53.8°F | 29.3°F | 3.58 in | 47.8°F | 31.3°F | 3.75 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 →