Climate twins of Tustin, CA
These are the US cities whose 12-month climate pattern most closely matches Tustin'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: Tustin vs its climate twin
Top match: Concord, CA
| Month | Tustin | Concord | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 69.3°F | 48.7°F | 2.88 in | 57.6°F | 41.2°F | 3.21 in |
| February | 69.3°F | 49.5°F | 3.16 in | 62.1°F | 43.8°F | 3.19 in |
| March | 71.2°F | 51.8°F | 1.71 in | 66.7°F | 46.6°F | 2.26 in |
| April | 73.2°F | 54.2°F | 0.82 in | 71.2°F | 49.1°F | 1.12 in |
| May | 74.7°F | 58.1°F | 0.29 in | 77.5°F | 53.0°F | 0.51 in |
| June | 77.7°F | 61.3°F | 0.08 in | 84.2°F | 57.1°F | 0.16 in |
| July | 82.5°F | 64.7°F | 0.03 in | 88.0°F | 58.7°F | 0.00 in |
| August | 84.6°F | 65.3°F | 0.00 in | 87.9°F | 59.4°F | 0.02 in |
| September | 83.8°F | 63.9°F | 0.12 in | 85.3°F | 57.8°F | 0.06 in |
| October | 79.4°F | 59.4°F | 0.50 in | 78.1°F | 52.6°F | 0.73 in |
| November | 74.0°F | 52.8°F | 0.79 in | 66.1°F | 45.2°F | 1.61 in |
| December | 68.4°F | 48.1°F | 2.16 in | 58.2°F | 40.7°F | 3.18 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 →