Climate twins of North Pekin, IL
These are the US cities whose 12-month climate pattern most closely matches North Pekin'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 Pekin vs its climate twin
Top match: Newark, MO
| Month | North Pekin | Newark | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 33.6°F | 17.6°F | 2.06 in | 34.5°F | 17.8°F | 1.70 in |
| February | 38.7°F | 21.4°F | 1.99 in | 39.5°F | 21.5°F | 1.85 in |
| March | 51.2°F | 31.6°F | 2.69 in | 52.1°F | 31.5°F | 2.49 in |
| April | 63.7°F | 42.1°F | 3.99 in | 64.1°F | 42.0°F | 4.01 in |
| May | 74.2°F | 52.8°F | 4.69 in | 73.2°F | 52.8°F | 5.06 in |
| June | 83.2°F | 62.4°F | 3.73 in | 81.9°F | 62.2°F | 4.84 in |
| July | 86.3°F | 66.3°F | 3.53 in | 85.7°F | 65.5°F | 3.98 in |
| August | 84.6°F | 64.4°F | 3.31 in | 84.3°F | 63.5°F | 3.88 in |
| September | 78.4°F | 56.3°F | 3.48 in | 77.7°F | 55.0°F | 3.73 in |
| October | 65.4°F | 44.4°F | 3.17 in | 65.6°F | 44.1°F | 3.41 in |
| November | 50.8°F | 33.0°F | 2.70 in | 50.9°F | 32.6°F | 2.61 in |
| December | 38.5°F | 23.2°F | 2.21 in | 38.6°F | 23.3°F | 1.91 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 →