Climate twins of Hayward, CA
These are the US cities whose 12-month climate pattern most closely matches Hayward'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: Hayward vs its climate twin
Top match: San Luis Obispo, CA
| Month | Hayward | San Luis Obispo | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 59.3°F | 43.1°F | 2.91 in | 65.0°F | 40.6°F | 3.86 in |
| February | 61.9°F | 45.1°F | 3.11 in | 65.1°F | 42.4°F | 3.54 in |
| March | 64.4°F | 47.4°F | 2.35 in | 66.7°F | 44.5°F | 3.17 in |
| April | 66.8°F | 49.5°F | 1.20 in | 69.1°F | 45.6°F | 1.05 in |
| May | 69.3°F | 52.4°F | 0.58 in | 72.0°F | 47.8°F | 0.47 in |
| June | 74.0°F | 55.1°F | 0.15 in | 75.2°F | 51.1°F | 0.10 in |
| July | 74.7°F | 57.4°F | 0.00 in | 78.0°F | 54.3°F | 0.08 in |
| August | 76.4°F | 58.2°F | 0.10 in | 79.3°F | 54.9°F | 0.01 in |
| September | 77.0°F | 57.6°F | 0.08 in | 79.5°F | 53.4°F | 0.04 in |
| October | 73.5°F | 53.5°F | 0.81 in | 77.2°F | 49.7°F | 0.92 in |
| November | 65.1°F | 47.2°F | 1.51 in | 71.1°F | 44.7°F | 1.43 in |
| December | 59.4°F | 42.9°F | 3.20 in | 64.9°F | 40.2°F | 3.27 in |
Cities that consider Hayward their climate twin
These US cities have Hayward in their top 3 most-similar list — meaning if you were to move from any of these places, Hayward would feel familiar.
- San Luis Obispo, CA (ranks Hayward #2)
- Lompoc, CA (ranks Hayward #3)
- Guadalupe, CA (ranks Hayward #3)
- Santa Maria, CA (ranks Hayward #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 →