Climate twins of Norwich, CT
These are the US cities whose 12-month climate pattern most closely matches Norwich'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: Norwich vs its climate twin
Top match: Coatesville, PA
| Month | Norwich | Coatesville | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 37.7°F | 21.2°F | 3.89 in | 38.5°F | 21.9°F | 4.05 in |
| February | 40.5°F | 22.9°F | 3.75 in | 41.5°F | 23.2°F | 3.34 in |
| March | 47.8°F | 29.4°F | 5.09 in | 50.3°F | 30.5°F | 4.80 in |
| April | 59.3°F | 39.1°F | 4.71 in | 62.7°F | 40.1°F | 4.10 in |
| May | 69.9°F | 48.9°F | 3.64 in | 72.8°F | 50.3°F | 4.02 in |
| June | 78.4°F | 58.5°F | 4.27 in | 80.8°F | 59.0°F | 4.54 in |
| July | 84.1°F | 64.8°F | 3.63 in | 85.4°F | 64.6°F | 4.55 in |
| August | 82.6°F | 62.7°F | 4.41 in | 83.4°F | 62.8°F | 4.58 in |
| September | 75.5°F | 54.9°F | 4.79 in | 76.5°F | 55.7°F | 5.17 in |
| October | 63.9°F | 43.6°F | 4.86 in | 64.9°F | 43.6°F | 4.57 in |
| November | 53.0°F | 34.3°F | 4.17 in | 53.6°F | 34.0°F | 3.61 in |
| December | 43.2°F | 27.0°F | 4.97 in | 43.1°F | 26.9°F | 4.79 in |
Cities that consider Norwich their climate twin
These US cities have Norwich in their top 3 most-similar list — meaning if you were to move from any of these places, Norwich would feel familiar.
- Harriman, NY (ranks Norwich #2)
- Kiryas Joel, NY (ranks Norwich #2)
- Monroe, NY (ranks Norwich #2)
- Woodbury, NY (ranks Norwich #2)
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 →