Climate twins of Hartford, MI
These are the US cities whose 12-month climate pattern most closely matches Hartford'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: Hartford vs its climate twin
Top match: Wilkes-Barre, PA
| Month | Hartford | Wilkes-Barre | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 33.3°F | 19.7°F | 2.36 in | 35.7°F | 20.3°F | 2.59 in |
| February | 36.7°F | 21.6°F | 1.88 in | 38.8°F | 21.9°F | 2.07 in |
| March | 47.9°F | 29.6°F | 2.04 in | 47.6°F | 28.9°F | 2.77 in |
| April | 61.1°F | 39.6°F | 3.55 in | 61.1°F | 39.3°F | 3.26 in |
| May | 72.6°F | 50.5°F | 3.45 in | 72.2°F | 49.6°F | 3.26 in |
| June | 81.4°F | 60.3°F | 3.79 in | 79.9°F | 58.1°F | 3.80 in |
| July | 84.6°F | 64.4°F | 3.76 in | 84.6°F | 62.7°F | 3.61 in |
| August | 82.7°F | 63.1°F | 4.53 in | 82.4°F | 61.1°F | 3.85 in |
| September | 76.4°F | 56.2°F | 3.27 in | 75.1°F | 54.0°F | 4.15 in |
| October | 64.0°F | 45.3°F | 4.29 in | 63.1°F | 43.3°F | 3.71 in |
| November | 49.3°F | 34.5°F | 3.02 in | 51.2°F | 34.3°F | 2.85 in |
| December | 38.0°F | 25.3°F | 2.36 in | 40.3°F | 26.3°F | 2.80 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 →