Climate twins of Green Castle, MO
These are the US cities whose 12-month climate pattern most closely matches Green Castle'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: Green Castle vs its climate twin
Top match: Little York, IL
| Month | Green Castle | Little York | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 32.0°F | 12.9°F | 1.34 in | 30.4°F | 13.6°F | 1.68 in |
| February | 37.1°F | 17.1°F | 1.70 in | 35.1°F | 17.5°F | 1.63 in |
| March | 50.2°F | 27.5°F | 2.56 in | 48.2°F | 28.2°F | 2.45 in |
| April | 62.4°F | 37.6°F | 3.87 in | 61.7°F | 39.1°F | 3.88 in |
| May | 71.3°F | 49.1°F | 5.57 in | 72.5°F | 50.9°F | 5.50 in |
| June | 80.7°F | 59.2°F | 5.25 in | 81.4°F | 60.4°F | 5.02 in |
| July | 84.9°F | 63.2°F | 4.51 in | 84.1°F | 63.2°F | 4.08 in |
| August | 83.6°F | 60.6°F | 4.75 in | 82.5°F | 61.3°F | 3.75 in |
| September | 76.6°F | 52.2°F | 4.21 in | 77.3°F | 52.9°F | 3.93 in |
| October | 63.7°F | 40.2°F | 3.04 in | 64.5°F | 41.1°F | 2.94 in |
| November | 49.5°F | 28.5°F | 2.25 in | 48.9°F | 29.6°F | 2.38 in |
| December | 36.9°F | 18.8°F | 1.69 in | 35.8°F | 19.6°F | 1.83 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 →