Climate twins of San Jose, CA
These are the US cities whose 12-month climate pattern most closely matches San Jose'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: San Jose vs its climate twin
Top match: Oceanside, CA
| Month | San Jose | Oceanside | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 59.8°F | 41.8°F | 2.80 in | 66.7°F | 40.5°F | 2.37 in |
| February | 62.4°F | 43.9°F | 2.69 in | 66.0°F | 42.1°F | 2.90 in |
| March | 65.9°F | 46.3°F | 2.08 in | 66.3°F | 46.2°F | 1.68 in |
| April | 69.2°F | 48.4°F | 1.07 in | 68.9°F | 47.6°F | 0.87 in |
| May | 73.8°F | 52.1°F | 0.39 in | 69.8°F | 54.4°F | 0.30 in |
| June | 79.1°F | 55.5°F | 0.18 in | 72.7°F | 58.2°F | 0.11 in |
| July | 80.8°F | 58.1°F | 0.00 in | 76.5°F | 62.1°F | 0.05 in |
| August | 81.4°F | 58.6°F | 0.05 in | 78.3°F | 62.1°F | 0.04 in |
| September | 80.7°F | 57.2°F | 0.07 in | 77.8°F | 59.2°F | 0.13 in |
| October | 75.8°F | 52.7°F | 0.53 in | 75.0°F | 52.6°F | 0.64 in |
| November | 66.1°F | 45.7°F | 1.33 in | 70.9°F | 43.8°F | 0.79 in |
| December | 59.5°F | 41.7°F | 2.29 in | 66.1°F | 39.8°F | 1.98 in |
Cities that consider San Jose their climate twin
These US cities have San Jose in their top 3 most-similar list — meaning if you were to move from any of these places, San Jose would feel familiar.
- Vista, CA (ranks San Jose #2)
- Thousand Oaks, CA (ranks San Jose #2)
- Camarillo, CA (ranks San Jose #2)
- Carlsbad, CA (ranks San Jose #2)
- Solana Beach, CA (ranks San Jose #2)
- Encinitas, CA (ranks San Jose #2)
- Laguna Hills, CA (ranks San Jose #2)
- Aliso Viejo, CA (ranks San Jose #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 →