Climate twins of Calamus, IA
These are the US cities whose 12-month climate pattern most closely matches Calamus'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: Calamus vs its climate twin
Top match: Cromwell, IA
| Month | Calamus | Cromwell | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 29.1°F | 11.6°F | 1.58 in | 30.5°F | 10.6°F | 1.04 in |
| February | 34.2°F | 15.2°F | 1.80 in | 35.1°F | 13.8°F | 1.46 in |
| March | 47.6°F | 26.6°F | 2.80 in | 48.7°F | 25.5°F | 2.53 in |
| April | 61.6°F | 37.2°F | 4.10 in | 61.2°F | 36.1°F | 3.74 in |
| May | 73.2°F | 49.6°F | 4.48 in | 71.3°F | 48.8°F | 5.15 in |
| June | 82.0°F | 59.9°F | 5.08 in | 80.9°F | 59.4°F | 5.17 in |
| July | 85.2°F | 62.1°F | 4.55 in | 84.7°F | 63.2°F | 4.46 in |
| August | 83.2°F | 59.8°F | 4.14 in | 83.0°F | 60.7°F | 4.23 in |
| September | 77.0°F | 50.9°F | 3.55 in | 76.4°F | 51.6°F | 3.70 in |
| October | 64.0°F | 38.9°F | 3.16 in | 64.1°F | 39.3°F | 2.79 in |
| November | 48.2°F | 27.4°F | 2.31 in | 48.4°F | 26.2°F | 2.14 in |
| December | 34.3°F | 17.8°F | 2.04 in | 35.7°F | 16.0°F | 1.48 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 →