Climate twins of South Prairie, WA
These are the US cities whose 12-month climate pattern most closely matches South Prairie'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: South Prairie vs its climate twin
Top match: Westfir, OR
| Month | South Prairie | Westfir | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 47.1°F | 33.9°F | 5.91 in | 43.8°F | 31.4°F | 6.23 in |
| February | 49.5°F | 34.0°F | 4.74 in | 49.2°F | 32.2°F | 4.57 in |
| March | 53.3°F | 35.8°F | 5.22 in | 54.5°F | 34.1°F | 5.01 in |
| April | 58.2°F | 38.9°F | 4.24 in | 59.3°F | 37.4°F | 4.26 in |
| May | 65.1°F | 44.0°F | 3.51 in | 65.8°F | 42.6°F | 3.23 in |
| June | 69.5°F | 48.0°F | 2.93 in | 71.2°F | 47.0°F | 1.95 in |
| July | 76.6°F | 51.8°F | 1.08 in | 80.0°F | 50.7°F | 0.53 in |
| August | 76.9°F | 51.5°F | 1.21 in | 81.0°F | 50.0°F | 0.56 in |
| September | 71.5°F | 47.3°F | 2.35 in | 75.8°F | 45.5°F | 1.58 in |
| October | 59.8°F | 41.6°F | 4.66 in | 62.8°F | 39.9°F | 3.63 in |
| November | 51.3°F | 37.0°F | 6.82 in | 49.0°F | 35.2°F | 6.66 in |
| December | 46.0°F | 33.3°F | 5.64 in | 42.4°F | 31.6°F | 7.54 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 →