Climate twins of Raleigh, NC
These are the US cities whose 12-month climate pattern most closely matches Raleigh'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: Raleigh vs its climate twin
Top match: Urbanna, VA
| Month | Raleigh | Urbanna | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 51.7°F | 31.6°F | 3.65 in | 49.0°F | 28.4°F | 3.59 in |
| February | 55.2°F | 33.2°F | 2.88 in | 52.8°F | 29.9°F | 2.83 in |
| March | 62.6°F | 40.1°F | 4.17 in | 60.7°F | 36.3°F | 3.96 in |
| April | 72.3°F | 48.8°F | 3.63 in | 71.8°F | 45.7°F | 3.76 in |
| May | 80.2°F | 57.9°F | 3.99 in | 78.7°F | 55.3°F | 4.05 in |
| June | 87.2°F | 66.1°F | 4.87 in | 86.1°F | 63.9°F | 4.48 in |
| July | 90.6°F | 70.3°F | 4.65 in | 90.0°F | 68.4°F | 4.86 in |
| August | 88.7°F | 68.8°F | 4.71 in | 87.7°F | 66.8°F | 4.78 in |
| September | 82.4°F | 62.9°F | 5.72 in | 81.8°F | 60.6°F | 4.89 in |
| October | 72.5°F | 50.9°F | 3.90 in | 71.7°F | 48.7°F | 4.07 in |
| November | 62.1°F | 40.9°F | 3.51 in | 61.1°F | 38.4°F | 3.01 in |
| December | 54.7°F | 34.9°F | 3.68 in | 52.0°F | 31.7°F | 3.60 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 →