Climate twins of Waterloo, IN
These are the US cities whose 12-month climate pattern most closely matches Waterloo'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: Waterloo vs its climate twin
Top match: Republic, OH
| Month | Waterloo | Republic | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 31.7°F | 16.8°F | 2.49 in | 33.3°F | 18.7°F | 2.57 in |
| February | 35.4°F | 18.5°F | 2.17 in | 36.4°F | 20.5°F | 2.24 in |
| March | 46.2°F | 26.6°F | 2.41 in | 46.5°F | 28.8°F | 2.73 in |
| April | 59.6°F | 36.8°F | 3.65 in | 60.0°F | 38.7°F | 3.82 in |
| May | 70.7°F | 48.6°F | 4.47 in | 71.5°F | 50.4°F | 4.10 in |
| June | 80.1°F | 58.6°F | 4.18 in | 80.5°F | 59.9°F | 4.20 in |
| July | 84.0°F | 62.1°F | 3.69 in | 83.9°F | 63.6°F | 3.91 in |
| August | 81.6°F | 59.9°F | 3.67 in | 82.5°F | 61.8°F | 3.54 in |
| September | 75.7°F | 52.2°F | 3.13 in | 76.7°F | 54.3°F | 3.32 in |
| October | 62.8°F | 41.4°F | 2.79 in | 63.8°F | 42.9°F | 2.76 in |
| November | 48.3°F | 31.3°F | 2.80 in | 49.7°F | 33.4°F | 2.89 in |
| December | 36.6°F | 23.3°F | 2.55 in | 38.2°F | 24.5°F | 2.61 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 →