Climate twins of Herndon, VA
These are the US cities whose 12-month climate pattern most closely matches Herndon'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: Herndon vs its climate twin
Top match: Buchanan, VA
| Month | Herndon | Buchanan | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 42.6°F | 25.2°F | 2.94 in | 44.1°F | 26.9°F | 3.16 in |
| February | 46.1°F | 26.7°F | 2.61 in | 48.8°F | 28.5°F | 2.68 in |
| March | 54.8°F | 33.6°F | 3.50 in | 56.8°F | 35.1°F | 3.69 in |
| April | 66.8°F | 43.2°F | 3.47 in | 69.5°F | 44.0°F | 3.82 in |
| May | 75.0°F | 53.0°F | 4.72 in | 76.6°F | 54.0°F | 4.44 in |
| June | 83.1°F | 61.9°F | 4.30 in | 83.4°F | 62.8°F | 3.94 in |
| July | 87.6°F | 66.8°F | 4.15 in | 86.5°F | 67.3°F | 4.54 in |
| August | 86.3°F | 65.2°F | 3.53 in | 84.8°F | 66.0°F | 3.03 in |
| September | 79.3°F | 57.9°F | 3.94 in | 78.8°F | 59.2°F | 4.13 in |
| October | 67.8°F | 45.3°F | 3.65 in | 68.1°F | 47.0°F | 3.41 in |
| November | 56.5°F | 35.6°F | 3.13 in | 56.5°F | 35.5°F | 3.28 in |
| December | 46.5°F | 29.0°F | 3.30 in | 47.3°F | 29.8°F | 3.49 in |
Cities that consider Herndon their climate twin
These US cities have Herndon in their top 3 most-similar list — meaning if you were to move from any of these places, Herndon would feel familiar.
- Buchanan, VA (ranks Herndon #2)
- Roanoke, VA (ranks Herndon #2)
- Salem, VA (ranks Herndon #3)
- Vinton, VA (ranks Herndon #2)
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 →