Climate twins of Ponderay, ID
These are the US cities whose 12-month climate pattern most closely matches Ponderay'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: Ponderay vs its climate twin
Top match: South Cle Elum, WA
| Month | Ponderay | South Cle Elum | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 33.6°F | 22.9°F | 4.33 in | 35.0°F | 22.2°F | 3.40 in |
| February | 38.4°F | 23.7°F | 2.91 in | 40.7°F | 23.6°F | 2.49 in |
| March | 46.4°F | 28.6°F | 3.58 in | 48.9°F | 27.8°F | 2.73 in |
| April | 55.6°F | 34.5°F | 2.37 in | 57.3°F | 32.9°F | 1.41 in |
| May | 65.8°F | 41.8°F | 2.72 in | 66.1°F | 40.4°F | 1.64 in |
| June | 71.8°F | 47.5°F | 2.44 in | 71.9°F | 46.8°F | 1.10 in |
| July | 81.8°F | 51.6°F | 1.17 in | 81.1°F | 52.7°F | 0.54 in |
| August | 81.9°F | 49.8°F | 0.80 in | 81.4°F | 51.1°F | 0.47 in |
| September | 71.7°F | 42.4°F | 1.41 in | 72.9°F | 42.7°F | 0.90 in |
| October | 56.3°F | 34.1°F | 2.95 in | 57.8°F | 33.9°F | 2.44 in |
| November | 41.8°F | 28.9°F | 4.72 in | 43.2°F | 27.7°F | 4.07 in |
| December | 33.5°F | 22.8°F | 4.61 in | 34.3°F | 22.3°F | 3.50 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 →