Climate twins of Corunna, MI
These are the US cities whose 12-month climate pattern most closely matches Corunna'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: Corunna vs its climate twin
Top match: Scottsville, NY
| Month | Corunna | Scottsville | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 30.7°F | 15.1°F | 2.17 in | 32.4°F | 16.4°F | 2.00 in |
| February | 33.2°F | 15.7°F | 1.77 in | 34.2°F | 16.7°F | 1.65 in |
| March | 44.5°F | 24.4°F | 2.12 in | 42.5°F | 23.7°F | 2.48 in |
| April | 57.2°F | 33.3°F | 3.51 in | 55.8°F | 34.1°F | 2.81 in |
| May | 70.2°F | 44.5°F | 3.95 in | 69.0°F | 45.6°F | 3.01 in |
| June | 79.1°F | 54.6°F | 3.22 in | 77.4°F | 55.6°F | 3.47 in |
| July | 83.3°F | 58.5°F | 3.33 in | 81.5°F | 59.9°F | 3.68 in |
| August | 80.9°F | 57.1°F | 3.19 in | 79.9°F | 57.9°F | 3.43 in |
| September | 74.5°F | 49.9°F | 2.80 in | 73.4°F | 50.7°F | 3.15 in |
| October | 61.2°F | 40.0°F | 3.01 in | 60.9°F | 40.6°F | 3.23 in |
| November | 48.2°F | 30.5°F | 2.55 in | 48.4°F | 31.5°F | 2.45 in |
| December | 36.3°F | 22.0°F | 1.98 in | 37.6°F | 23.3°F | 2.23 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 →