Climate twins of Fertile, MN
These are the US cities whose 12-month climate pattern most closely matches Fertile'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: Fertile vs its climate twin
Top match: Federal Dam, MN
| Month | Fertile | Federal Dam | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 16.0°F | -3.9°F | 0.78 in | 17.6°F | -2.3°F | 0.68 in |
| February | 20.8°F | -0.8°F | 0.66 in | 23.8°F | 1.2°F | 0.68 in |
| March | 34.9°F | 14.1°F | 1.01 in | 37.4°F | 15.1°F | 1.11 in |
| April | 52.8°F | 29.5°F | 1.45 in | 51.8°F | 29.4°F | 1.86 in |
| May | 67.2°F | 41.6°F | 2.87 in | 66.1°F | 42.7°F | 2.91 in |
| June | 76.7°F | 53.2°F | 4.62 in | 75.4°F | 53.5°F | 3.82 in |
| July | 80.7°F | 56.8°F | 3.90 in | 79.8°F | 58.3°F | 4.37 in |
| August | 79.7°F | 54.0°F | 2.93 in | 78.2°F | 55.9°F | 3.20 in |
| September | 70.9°F | 45.5°F | 2.80 in | 69.3°F | 47.1°F | 3.13 in |
| October | 54.8°F | 32.8°F | 2.23 in | 54.1°F | 35.0°F | 2.51 in |
| November | 36.6°F | 18.5°F | 0.87 in | 36.4°F | 21.3°F | 1.22 in |
| December | 22.3°F | 4.5°F | 0.92 in | 23.1°F | 6.8°F | 1.09 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 →