Climate twins of Roseburg, OR
These are the US cities whose 12-month climate pattern most closely matches Roseburg'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: Roseburg vs its climate twin
Top match: Vancouver, WA
| Month | Roseburg | Vancouver | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 50.1°F | 37.1°F | 4.82 in | 47.5°F | 36.2°F | 5.03 in |
| February | 53.7°F | 37.6°F | 3.62 in | 51.5°F | 36.8°F | 3.68 in |
| March | 58.7°F | 39.6°F | 3.47 in | 56.8°F | 39.7°F | 3.97 in |
| April | 63.3°F | 42.5°F | 2.71 in | 62.0°F | 43.7°F | 2.89 in |
| May | 71.0°F | 47.9°F | 2.09 in | 69.3°F | 49.4°F | 2.51 in |
| June | 76.7°F | 52.5°F | 0.93 in | 74.3°F | 54.1°F | 1.63 in |
| July | 85.8°F | 57.4°F | 0.26 in | 81.9°F | 58.5°F | 0.51 in |
| August | 85.9°F | 57.1°F | 0.23 in | 82.3°F | 58.9°F | 0.54 in |
| September | 80.1°F | 52.2°F | 0.85 in | 76.7°F | 54.1°F | 1.52 in |
| October | 66.9°F | 45.2°F | 2.32 in | 64.4°F | 46.7°F | 3.42 in |
| November | 54.2°F | 40.6°F | 4.72 in | 53.5°F | 40.6°F | 5.45 in |
| December | 48.2°F | 36.8°F | 6.05 in | 46.9°F | 36.2°F | 5.77 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 →