Climate twins of South Haven, MN
These are the US cities whose 12-month climate pattern most closely matches South Haven'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: South Haven vs its climate twin
Top match: Chetek, WI
| Month | South Haven | Chetek | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 19.8°F | 2.6°F | 0.76 in | 21.6°F | 1.7°F | 0.89 in |
| February | 24.7°F | 6.3°F | 0.86 in | 27.2°F | 4.8°F | 0.82 in |
| March | 37.2°F | 18.7°F | 1.72 in | 39.6°F | 18.1°F | 1.47 in |
| April | 53.2°F | 31.9°F | 2.79 in | 54.3°F | 31.6°F | 2.77 in |
| May | 66.1°F | 45.0°F | 4.07 in | 67.8°F | 44.7°F | 3.85 in |
| June | 75.6°F | 55.2°F | 4.33 in | 77.3°F | 54.7°F | 4.17 in |
| July | 79.3°F | 59.9°F | 4.12 in | 81.4°F | 58.8°F | 3.98 in |
| August | 77.5°F | 57.3°F | 3.94 in | 79.5°F | 56.3°F | 4.21 in |
| September | 70.7°F | 48.9°F | 3.12 in | 71.4°F | 47.8°F | 3.34 in |
| October | 56.0°F | 36.9°F | 2.74 in | 56.8°F | 35.3°F | 3.03 in |
| November | 39.3°F | 22.6°F | 1.35 in | 40.4°F | 22.9°F | 1.68 in |
| December | 25.3°F | 10.7°F | 1.00 in | 27.1°F | 10.0°F | 1.22 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 →