Climate twins of Valparaiso, IN
These are the US cities whose 12-month climate pattern most closely matches Valparaiso'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: Valparaiso vs its climate twin
Top match: Winchester, IN
| Month | Valparaiso | Winchester | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 32.1°F | 17.6°F | 2.38 in | 33.2°F | 17.8°F | 2.73 in |
| February | 36.4°F | 21.4°F | 2.24 in | 36.7°F | 19.9°F | 2.09 in |
| March | 47.6°F | 29.1°F | 2.63 in | 47.8°F | 29.2°F | 2.91 in |
| April | 60.7°F | 39.1°F | 3.74 in | 60.7°F | 40.1°F | 3.99 in |
| May | 71.2°F | 49.3°F | 4.59 in | 71.3°F | 51.7°F | 4.39 in |
| June | 79.7°F | 58.5°F | 4.33 in | 79.4°F | 60.8°F | 4.84 in |
| July | 82.9°F | 63.1°F | 4.10 in | 82.8°F | 63.6°F | 3.94 in |
| August | 81.0°F | 61.7°F | 3.57 in | 81.3°F | 61.1°F | 3.51 in |
| September | 75.2°F | 54.3°F | 2.92 in | 76.0°F | 54.1°F | 3.04 in |
| October | 63.6°F | 44.0°F | 3.93 in | 63.8°F | 43.1°F | 3.13 in |
| November | 49.1°F | 33.5°F | 3.26 in | 49.8°F | 32.3°F | 3.22 in |
| December | 36.6°F | 23.7°F | 2.58 in | 38.2°F | 23.6°F | 2.27 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 →