Climate twins of Shasta Lake, CA
These are the US cities whose 12-month climate pattern most closely matches Shasta Lake'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: Shasta Lake vs its climate twin
Top match: Scotts Valley, CA
| Month | Shasta Lake | Scotts Valley | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 55.0°F | 40.5°F | 10.51 in | 64.6°F | 37.4°F | 10.42 in |
| February | 58.7°F | 41.7°F | 11.41 in | 66.9°F | 38.9°F | 9.68 in |
| March | 63.4°F | 43.9°F | 9.24 in | 70.6°F | 40.5°F | 7.00 in |
| April | 69.6°F | 47.6°F | 4.61 in | 75.0°F | 41.9°F | 3.28 in |
| May | 78.9°F | 55.4°F | 2.93 in | 79.6°F | 45.7°F | 1.24 in |
| June | 88.2°F | 63.0°F | 1.51 in | 85.5°F | 48.6°F | 0.24 in |
| July | 97.0°F | 69.0°F | 0.14 in | 87.9°F | 51.2°F | 0.01 in |
| August | 96.0°F | 67.7°F | 0.16 in | 89.5°F | 51.0°F | 0.04 in |
| September | 90.3°F | 63.0°F | 0.52 in | 88.6°F | 48.9°F | 0.12 in |
| October | 77.6°F | 54.8°F | 3.43 in | 83.0°F | 44.2°F | 2.17 in |
| November | 62.4°F | 46.0°F | 6.59 in | 71.3°F | 39.6°F | 5.00 in |
| December | 54.2°F | 40.6°F | 11.99 in | 63.7°F | 36.8°F | 10.43 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 →