Climate twins of Hartington, NE
These are the US cities whose 12-month climate pattern most closely matches Hartington'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: Hartington vs its climate twin
Top match: Mountain Lake, MN
| Month | Hartington | Mountain Lake | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 30.3°F | 10.1°F | 0.57 in | 25.3°F | 8.0°F | 0.89 in |
| February | 34.8°F | 13.3°F | 0.84 in | 30.3°F | 11.7°F | 0.83 in |
| March | 47.1°F | 23.7°F | 1.50 in | 42.7°F | 24.0°F | 1.76 in |
| April | 59.2°F | 35.0°F | 3.21 in | 58.0°F | 35.6°F | 3.21 in |
| May | 70.4°F | 47.8°F | 4.37 in | 70.5°F | 48.3°F | 4.48 in |
| June | 80.3°F | 59.0°F | 4.64 in | 80.5°F | 59.4°F | 4.73 in |
| July | 84.8°F | 63.2°F | 3.46 in | 84.3°F | 63.4°F | 3.93 in |
| August | 82.4°F | 60.4°F | 3.34 in | 81.4°F | 60.7°F | 3.69 in |
| September | 76.0°F | 51.0°F | 3.01 in | 75.0°F | 52.0°F | 3.20 in |
| October | 62.5°F | 37.7°F | 2.56 in | 60.7°F | 38.6°F | 2.45 in |
| November | 46.8°F | 24.6°F | 1.30 in | 43.6°F | 25.3°F | 1.50 in |
| December | 33.6°F | 14.3°F | 0.79 in | 30.4°F | 13.8°F | 1.07 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 →