Climate twins of Java, SD
These are the US cities whose 12-month climate pattern most closely matches Java'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: Java vs its climate twin
Top match: Surrey, ND
| Month | Java | Surrey | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 23.2°F | 4.0°F | 0.40 in | 23.3°F | 4.4°F | 0.28 in |
| February | 27.7°F | 7.6°F | 0.57 in | 27.0°F | 7.7°F | 0.29 in |
| March | 40.5°F | 19.3°F | 0.79 in | 39.5°F | 19.0°F | 0.51 in |
| April | 54.9°F | 31.0°F | 1.60 in | 55.8°F | 31.2°F | 1.00 in |
| May | 67.3°F | 44.0°F | 2.82 in | 68.9°F | 43.3°F | 2.73 in |
| June | 77.5°F | 54.9°F | 3.45 in | 77.5°F | 53.6°F | 3.73 in |
| July | 84.1°F | 60.3°F | 2.68 in | 83.8°F | 58.5°F | 2.50 in |
| August | 82.8°F | 57.7°F | 2.41 in | 83.7°F | 56.4°F | 2.08 in |
| September | 73.7°F | 48.2°F | 1.64 in | 73.1°F | 47.1°F | 1.57 in |
| October | 57.5°F | 34.0°F | 1.83 in | 56.8°F | 34.3°F | 1.15 in |
| November | 40.8°F | 20.6°F | 0.54 in | 39.7°F | 20.6°F | 0.56 in |
| December | 28.0°F | 9.7°F | 0.51 in | 27.2°F | 9.3°F | 0.31 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 →