Climate twins of Jersey City, NJ
These are the US cities whose 12-month climate pattern most closely matches Jersey City'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: Jersey City vs its climate twin
Top match: Betterton, MD
| Month | Jersey City | Betterton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 39.4°F | 24.9°F | 3.66 in | 41.5°F | 25.3°F | 3.26 in |
| February | 42.3°F | 26.1°F | 3.26 in | 44.1°F | 27.1°F | 2.78 in |
| March | 49.9°F | 32.7°F | 4.30 in | 52.5°F | 33.1°F | 4.10 in |
| April | 61.8°F | 43.1°F | 4.07 in | 64.8°F | 43.2°F | 3.49 in |
| May | 72.1°F | 53.5°F | 4.36 in | 73.2°F | 52.7°F | 3.98 in |
| June | 81.5°F | 63.3°F | 4.87 in | 82.1°F | 62.4°F | 4.28 in |
| July | 86.8°F | 68.9°F | 4.81 in | 86.4°F | 67.7°F | 4.84 in |
| August | 84.6°F | 67.0°F | 4.38 in | 84.4°F | 65.8°F | 4.21 in |
| September | 77.5°F | 60.1°F | 4.33 in | 78.2°F | 58.8°F | 4.84 in |
| October | 65.6°F | 47.7°F | 4.15 in | 66.9°F | 46.5°F | 4.17 in |
| November | 54.2°F | 38.0°F | 3.65 in | 55.5°F | 36.8°F | 3.27 in |
| December | 44.0°F | 30.5°F | 4.58 in | 45.8°F | 30.2°F | 3.89 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 →