Climate twins of Chico, CA
These are the US cities whose 12-month climate pattern most closely matches Chico'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: Chico vs its climate twin
Top match: Monte Sereno, CA
| Month | Chico | Monte Sereno | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 56.1°F | 36.2°F | 5.12 in | 58.5°F | 39.5°F | 5.03 in |
| February | 62.2°F | 38.3°F | 5.14 in | 61.9°F | 41.3°F | 4.90 in |
| March | 66.7°F | 41.6°F | 3.63 in | 66.3°F | 43.1°F | 3.43 in |
| April | 72.8°F | 45.3°F | 1.95 in | 70.3°F | 45.1°F | 1.37 in |
| May | 81.3°F | 52.2°F | 1.35 in | 75.5°F | 49.4°F | 0.53 in |
| June | 89.3°F | 57.4°F | 0.64 in | 81.7°F | 52.5°F | 0.15 in |
| July | 95.2°F | 61.0°F | 0.03 in | 84.9°F | 55.9°F | 0.00 in |
| August | 94.3°F | 59.0°F | 0.10 in | 84.5°F | 55.8°F | 0.03 in |
| September | 90.9°F | 54.9°F | 0.25 in | 82.7°F | 53.8°F | 0.05 in |
| October | 79.7°F | 47.4°F | 1.73 in | 75.5°F | 48.9°F | 0.76 in |
| November | 65.0°F | 39.8°F | 2.41 in | 64.6°F | 42.7°F | 1.97 in |
| December | 56.6°F | 36.3°F | 5.04 in | 57.7°F | 39.5°F | 3.97 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 →