Climate twins of Bishop Hill, IL
These are the US cities whose 12-month climate pattern most closely matches Bishop Hill'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: Bishop Hill vs its climate twin
Top match: Eldon, IA
| Month | Bishop Hill | Eldon | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 30.0°F | 12.9°F | 1.62 in | 30.6°F | 13.6°F | 1.52 in |
| February | 35.1°F | 16.8°F | 1.76 in | 35.6°F | 17.7°F | 1.80 in |
| March | 48.2°F | 27.2°F | 2.35 in | 48.5°F | 28.1°F | 2.40 in |
| April | 61.4°F | 37.8°F | 4.22 in | 61.9°F | 38.8°F | 3.71 in |
| May | 72.6°F | 50.2°F | 4.82 in | 71.3°F | 49.8°F | 5.51 in |
| June | 81.5°F | 59.8°F | 5.17 in | 80.5°F | 59.5°F | 5.11 in |
| July | 84.1°F | 62.9°F | 3.63 in | 84.2°F | 63.5°F | 3.96 in |
| August | 82.3°F | 60.2°F | 3.73 in | 82.6°F | 61.3°F | 3.83 in |
| September | 76.5°F | 51.5°F | 3.97 in | 76.1°F | 52.8°F | 3.58 in |
| October | 63.8°F | 40.3°F | 2.84 in | 62.8°F | 41.3°F | 3.00 in |
| November | 48.3°F | 28.9°F | 2.55 in | 47.8°F | 29.7°F | 2.28 in |
| December | 35.7°F | 18.8°F | 2.01 in | 35.4°F | 19.7°F | 1.72 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 →