Climate twins of Pasadena, CA
These are the US cities whose 12-month climate pattern most closely matches Pasadena'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: Pasadena vs its climate twin
Top match: Sacramento, CA
| Month | Pasadena | Sacramento | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 68.1°F | 45.5°F | 4.51 in | 56.5°F | 41.1°F | 3.87 in |
| February | 69.3°F | 46.1°F | 5.16 in | 62.2°F | 43.7°F | 3.63 in |
| March | 72.6°F | 48.4°F | 3.03 in | 67.8°F | 46.7°F | 2.82 in |
| April | 76.2°F | 50.6°F | 1.11 in | 73.5°F | 49.3°F | 1.44 in |
| May | 78.3°F | 53.9°F | 0.48 in | 81.3°F | 54.0°F | 0.86 in |
| June | 83.7°F | 57.8°F | 0.21 in | 89.0°F | 58.7°F | 0.21 in |
| July | 89.1°F | 62.0°F | 0.06 in | 94.4°F | 61.4°F | 0.00 in |
| August | 91.3°F | 63.2°F | 0.03 in | 93.5°F | 61.0°F | 0.02 in |
| September | 89.9°F | 61.6°F | 0.22 in | 89.3°F | 58.8°F | 0.15 in |
| October | 83.0°F | 56.3°F | 0.84 in | 78.9°F | 52.9°F | 0.93 in |
| November | 74.7°F | 49.6°F | 1.10 in | 65.3°F | 45.3°F | 1.78 in |
| December | 67.2°F | 44.7°F | 3.33 in | 56.4°F | 40.7°F | 3.49 in |
Cities that consider Pasadena their climate twin
These US cities have Pasadena in their top 3 most-similar list — meaning if you were to move from any of these places, Pasadena would feel familiar.
- Willows, CA (ranks Pasadena #3)
- Winters, CA (ranks Pasadena #3)
- Vacaville, CA (ranks Pasadena #3)
- Suisun City, CA (ranks Pasadena #3)
- Fairfield, CA (ranks Pasadena #3)
- Gridley, CA (ranks Pasadena #3)
- Biggs, CA (ranks Pasadena #3)
- Oroville, CA (ranks Pasadena #3)
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 →