Climate twins of Rockville, SC
These are the US cities whose 12-month climate pattern most closely matches Rockville'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: Rockville vs its climate twin
Top match: Waycross, GA
| Month | Rockville | Waycross | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 59.2°F | 40.0°F | 3.58 in | 63.9°F | 36.7°F | 3.89 in |
| February | 62.9°F | 42.5°F | 2.89 in | 68.0°F | 40.1°F | 3.71 in |
| March | 68.8°F | 48.3°F | 3.88 in | 74.5°F | 45.2°F | 3.95 in |
| April | 76.1°F | 55.9°F | 3.55 in | 80.9°F | 51.5°F | 3.13 in |
| May | 82.9°F | 64.3°F | 2.79 in | 87.7°F | 60.2°F | 3.32 in |
| June | 88.0°F | 71.0°F | 5.21 in | 92.0°F | 68.8°F | 6.80 in |
| July | 90.3°F | 74.2°F | 6.55 in | 94.1°F | 71.4°F | 5.93 in |
| August | 89.6°F | 73.6°F | 7.46 in | 92.9°F | 70.8°F | 6.84 in |
| September | 85.3°F | 69.1°F | 5.19 in | 88.9°F | 65.9°F | 4.46 in |
| October | 77.6°F | 59.6°F | 4.34 in | 81.0°F | 55.2°F | 3.28 in |
| November | 67.8°F | 48.7°F | 2.61 in | 73.9°F | 44.9°F | 2.22 in |
| December | 61.3°F | 42.9°F | 3.85 in | 67.1°F | 39.0°F | 2.89 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 →