Climate twins of Hallowell, ME
These are the US cities whose 12-month climate pattern most closely matches Hallowell'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: Hallowell vs its climate twin
Top match: Woodstock, VT
| Month | Hallowell | Woodstock | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 28.8°F | 12.1°F | 2.62 in | 29.5°F | 7.3°F | 2.85 in |
| February | 31.9°F | 14.4°F | 2.32 in | 32.8°F | 8.5°F | 2.65 in |
| March | 40.6°F | 23.4°F | 3.21 in | 41.0°F | 18.7°F | 3.19 in |
| April | 53.5°F | 34.2°F | 3.82 in | 55.0°F | 31.4°F | 3.50 in |
| May | 65.8°F | 44.7°F | 3.27 in | 68.1°F | 42.7°F | 3.61 in |
| June | 74.4°F | 54.1°F | 4.01 in | 76.9°F | 52.6°F | 4.11 in |
| July | 79.9°F | 60.3°F | 3.20 in | 81.6°F | 57.4°F | 3.92 in |
| August | 78.9°F | 58.8°F | 3.41 in | 80.1°F | 55.4°F | 3.68 in |
| September | 70.9°F | 51.0°F | 3.90 in | 73.0°F | 47.3°F | 3.59 in |
| October | 57.9°F | 40.4°F | 4.69 in | 59.2°F | 35.5°F | 4.57 in |
| November | 45.7°F | 30.3°F | 3.95 in | 46.4°F | 26.1°F | 3.59 in |
| December | 34.7°F | 19.8°F | 3.44 in | 35.2°F | 15.6°F | 3.19 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 →