Climate twins of Bay City, OR
These are the US cities whose 12-month climate pattern most closely matches Bay City'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: Bay City vs its climate twin
Top match: Darrington, WA
| Month | Bay City | Darrington | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 51.9°F | 37.2°F | 13.38 in | 40.4°F | 30.3°F | 12.75 in |
| February | 53.1°F | 36.3°F | 9.49 in | 44.8°F | 30.7°F | 8.58 in |
| March | 54.8°F | 37.2°F | 10.05 in | 50.9°F | 33.6°F | 9.31 in |
| April | 57.2°F | 39.4°F | 7.48 in | 58.7°F | 38.2°F | 5.58 in |
| May | 61.1°F | 43.7°F | 4.56 in | 66.9°F | 44.4°F | 3.70 in |
| June | 64.1°F | 47.7°F | 3.28 in | 71.0°F | 49.5°F | 2.86 in |
| July | 67.7°F | 50.3°F | 0.92 in | 78.1°F | 53.2°F | 1.32 in |
| August | 69.0°F | 50.3°F | 1.20 in | 78.9°F | 53.8°F | 1.71 in |
| September | 68.4°F | 46.8°F | 3.58 in | 71.7°F | 47.4°F | 3.39 in |
| October | 62.5°F | 42.7°F | 7.80 in | 57.6°F | 40.3°F | 8.49 in |
| November | 55.5°F | 39.0°F | 13.44 in | 45.6°F | 34.9°F | 13.24 in |
| December | 50.6°F | 36.4°F | 14.65 in | 39.5°F | 30.4°F | 12.13 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 →