Climate twins of Troy, MI
These are the US cities whose 12-month climate pattern most closely matches Troy'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: Troy vs its climate twin
Top match: Niagara Falls, NY
| Month | Troy | Niagara Falls | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 31.3°F | 17.1°F | 2.18 in | 33.4°F | 18.6°F | 2.59 in |
| February | 34.0°F | 18.2°F | 1.87 in | 34.5°F | 18.8°F | 2.10 in |
| March | 44.3°F | 26.2°F | 2.19 in | 42.9°F | 26.0°F | 2.44 in |
| April | 57.6°F | 36.4°F | 2.94 in | 55.8°F | 36.0°F | 3.10 in |
| May | 69.4°F | 49.0°F | 3.81 in | 68.8°F | 47.9°F | 3.14 in |
| June | 78.2°F | 58.6°F | 3.29 in | 77.6°F | 58.3°F | 2.99 in |
| July | 82.3°F | 62.9°F | 3.14 in | 82.2°F | 63.4°F | 3.38 in |
| August | 80.8°F | 61.7°F | 3.24 in | 80.4°F | 61.4°F | 2.80 in |
| September | 73.9°F | 53.7°F | 2.92 in | 73.9°F | 53.6°F | 3.25 in |
| October | 60.5°F | 42.3°F | 2.90 in | 61.2°F | 42.8°F | 3.27 in |
| November | 47.4°F | 32.1°F | 3.15 in | 48.9°F | 33.4°F | 2.89 in |
| December | 36.4°F | 24.3°F | 2.25 in | 38.5°F | 25.4°F | 2.76 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 →