Climate twins of Barry, IL
These are the US cities whose 12-month climate pattern most closely matches Barry'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: Barry vs its climate twin
Top match: Smithton, MO
| Month | Barry | Smithton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 36.9°F | 20.6°F | 1.89 in | 38.6°F | 21.2°F | 1.53 in |
| February | 42.2°F | 23.9°F | 2.03 in | 43.8°F | 25.2°F | 1.68 in |
| March | 52.7°F | 33.3°F | 2.71 in | 55.2°F | 34.5°F | 2.49 in |
| April | 65.1°F | 44.0°F | 3.88 in | 65.4°F | 44.0°F | 3.78 in |
| May | 75.3°F | 55.1°F | 4.68 in | 74.4°F | 54.2°F | 4.68 in |
| June | 84.6°F | 64.6°F | 4.39 in | 83.2°F | 63.5°F | 4.46 in |
| July | 88.6°F | 68.6°F | 4.05 in | 87.3°F | 67.4°F | 4.52 in |
| August | 87.3°F | 67.0°F | 3.52 in | 86.5°F | 65.3°F | 2.84 in |
| September | 79.7°F | 58.9°F | 3.76 in | 78.7°F | 56.9°F | 3.01 in |
| October | 67.8°F | 47.3°F | 2.93 in | 67.1°F | 45.7°F | 3.09 in |
| November | 54.0°F | 35.9°F | 2.59 in | 53.8°F | 34.9°F | 2.45 in |
| December | 41.7°F | 25.8°F | 2.05 in | 42.8°F | 25.7°F | 1.67 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 →