Climate twins of Hartland, MN
These are the US cities whose 12-month climate pattern most closely matches Hartland'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: Hartland vs its climate twin
Top match: Cashton, WI
| Month | Hartland | Cashton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 23.9°F | 4.6°F | 0.71 in | 23.8°F | 10.8°F | 1.14 in |
| February | 28.6°F | 9.7°F | 0.73 in | 29.1°F | 14.0°F | 0.86 in |
| March | 41.0°F | 23.1°F | 1.65 in | 41.4°F | 24.9°F | 1.51 in |
| April | 56.2°F | 35.0°F | 3.39 in | 56.4°F | 36.7°F | 3.54 in |
| May | 68.9°F | 47.9°F | 4.60 in | 68.3°F | 48.4°F | 4.44 in |
| June | 78.9°F | 58.7°F | 5.45 in | 77.0°F | 58.8°F | 4.72 in |
| July | 82.2°F | 61.8°F | 4.86 in | 80.7°F | 62.6°F | 4.58 in |
| August | 79.5°F | 59.6°F | 4.13 in | 78.7°F | 60.8°F | 4.10 in |
| September | 73.5°F | 51.3°F | 3.72 in | 71.2°F | 52.9°F | 3.73 in |
| October | 59.7°F | 37.6°F | 2.50 in | 57.3°F | 40.5°F | 3.15 in |
| November | 43.1°F | 24.4°F | 1.66 in | 41.5°F | 28.0°F | 1.95 in |
| December | 29.4°F | 12.2°F | 1.11 in | 29.4°F | 16.7°F | 1.28 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 →