Climate twins of Healdsburg, CA
These are the US cities whose 12-month climate pattern most closely matches Healdsburg'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: Healdsburg vs its climate twin
Top match: Sonora, CA
| Month | Healdsburg | Sonora | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 57.7°F | 39.3°F | 8.00 in | 55.7°F | 32.8°F | 6.32 in |
| February | 61.5°F | 41.0°F | 8.33 in | 58.2°F | 34.2°F | 5.50 in |
| March | 66.0°F | 42.7°F | 6.35 in | 62.1°F | 37.0°F | 5.37 in |
| April | 72.1°F | 45.1°F | 2.87 in | 66.7°F | 39.7°F | 3.03 in |
| May | 79.0°F | 49.5°F | 1.60 in | 75.6°F | 45.5°F | 1.54 in |
| June | 85.8°F | 53.7°F | 0.35 in | 85.3°F | 50.8°F | 0.34 in |
| July | 88.7°F | 54.3°F | 0.00 in | 92.8°F | 56.8°F | 0.03 in |
| August | 88.3°F | 53.7°F | 0.04 in | 91.9°F | 55.5°F | 0.07 in |
| September | 84.6°F | 52.3°F | 0.10 in | 86.7°F | 50.8°F | 0.20 in |
| October | 76.9°F | 48.5°F | 2.20 in | 76.2°F | 43.0°F | 1.64 in |
| November | 64.9°F | 42.7°F | 4.46 in | 63.2°F | 36.4°F | 3.24 in |
| December | 57.3°F | 38.7°F | 8.51 in | 55.1°F | 32.4°F | 5.51 in |
Cities that consider Healdsburg their climate twin
These US cities have Healdsburg in their top 3 most-similar list — meaning if you were to move from any of these places, Healdsburg would feel familiar.
- Shasta Lake, CA (ranks Healdsburg #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 →