Climate twins of Plymouth, CA
These are the US cities whose 12-month climate pattern most closely matches Plymouth'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: Plymouth vs its climate twin
Top match: Lakeport, CA
| Month | Plymouth | Lakeport | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 54.8°F | 39.2°F | 6.06 in | 58.3°F | 37.2°F | 6.70 in |
| February | 58.0°F | 41.5°F | 5.66 in | 61.0°F | 38.8°F | 6.27 in |
| March | 62.0°F | 42.1°F | 4.90 in | 64.8°F | 40.7°F | 5.32 in |
| April | 66.7°F | 45.0°F | 2.78 in | 69.0°F | 42.9°F | 2.55 in |
| May | 75.0°F | 50.9°F | 1.69 in | 77.7°F | 47.8°F | 1.18 in |
| June | 86.0°F | 56.9°F | 0.38 in | 85.5°F | 52.4°F | 0.34 in |
| July | 93.4°F | 62.6°F | 0.02 in | 94.0°F | 56.1°F | 0.01 in |
| August | 91.9°F | 61.9°F | 0.04 in | 93.5°F | 54.8°F | 0.07 in |
| September | 86.7°F | 59.5°F | 0.26 in | 88.9°F | 50.7°F | 0.16 in |
| October | 76.5°F | 52.9°F | 1.71 in | 79.0°F | 45.1°F | 1.78 in |
| November | 63.3°F | 44.1°F | 3.12 in | 64.6°F | 39.9°F | 3.54 in |
| December | 55.0°F | 38.8°F | 5.40 in | 56.6°F | 36.0°F | 6.92 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 →