Climate twins of North City, IL
These are the US cities whose 12-month climate pattern most closely matches North 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: North City vs its climate twin
Top match: Eminence, MO
| Month | North City | Eminence | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 39.5°F | 21.9°F | 3.18 in | 45.3°F | 21.0°F | 2.77 in |
| February | 43.7°F | 24.7°F | 2.80 in | 50.6°F | 24.1°F | 2.86 in |
| March | 55.4°F | 34.6°F | 4.21 in | 61.0°F | 32.1°F | 4.53 in |
| April | 67.7°F | 45.4°F | 5.43 in | 71.2°F | 42.2°F | 5.26 in |
| May | 76.4°F | 56.0°F | 5.07 in | 80.0°F | 53.9°F | 5.58 in |
| June | 85.8°F | 65.1°F | 4.48 in | 86.8°F | 61.7°F | 4.01 in |
| July | 88.1°F | 68.4°F | 3.96 in | 91.5°F | 65.3°F | 4.13 in |
| August | 86.9°F | 66.4°F | 3.35 in | 90.8°F | 63.9°F | 3.79 in |
| September | 80.6°F | 57.8°F | 3.22 in | 83.0°F | 55.8°F | 3.77 in |
| October | 69.3°F | 46.1°F | 3.44 in | 72.8°F | 42.1°F | 3.44 in |
| November | 55.3°F | 35.4°F | 3.97 in | 59.6°F | 31.7°F | 3.94 in |
| December | 44.2°F | 26.5°F | 2.89 in | 47.7°F | 24.2°F | 3.25 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 →