Climate twins of Sidney, IA
These are the US cities whose 12-month climate pattern most closely matches Sidney'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: Sidney vs its climate twin
Top match: Deshler, NE
| Month | Sidney | Deshler | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 32.5°F | 13.1°F | 0.77 in | 36.6°F | 14.5°F | 0.80 in |
| February | 37.8°F | 17.3°F | 1.03 in | 41.3°F | 17.5°F | 0.82 in |
| March | 50.8°F | 27.7°F | 1.85 in | 53.4°F | 27.4°F | 1.70 in |
| April | 62.5°F | 38.5°F | 3.15 in | 64.1°F | 37.6°F | 2.74 in |
| May | 72.5°F | 50.5°F | 5.26 in | 73.7°F | 49.6°F | 5.26 in |
| June | 82.2°F | 60.9°F | 4.81 in | 84.4°F | 60.8°F | 4.39 in |
| July | 85.8°F | 64.9°F | 4.49 in | 88.6°F | 65.3°F | 4.57 in |
| August | 83.9°F | 62.5°F | 3.28 in | 86.6°F | 62.9°F | 3.52 in |
| September | 77.8°F | 53.6°F | 3.10 in | 79.8°F | 53.3°F | 2.60 in |
| October | 65.4°F | 41.7°F | 2.72 in | 67.2°F | 40.1°F | 2.33 in |
| November | 49.7°F | 28.7°F | 1.59 in | 52.4°F | 27.3°F | 1.30 in |
| December | 37.1°F | 18.7°F | 1.21 in | 40.1°F | 18.2°F | 1.05 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 →