Climate twins of Anamosa, IA
These are the US cities whose 12-month climate pattern most closely matches Anamosa'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: Anamosa vs its climate twin
Top match: Johnson Creek, WI
| Month | Anamosa | Johnson Creek | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 26.9°F | 8.8°F | 1.47 in | 26.8°F | 11.0°F | 1.64 in |
| February | 31.7°F | 12.2°F | 1.56 in | 31.1°F | 14.1°F | 1.58 in |
| March | 45.2°F | 24.5°F | 1.80 in | 43.2°F | 24.6°F | 2.14 in |
| April | 59.4°F | 35.6°F | 3.99 in | 56.3°F | 35.5°F | 4.02 in |
| May | 70.4°F | 47.0°F | 4.80 in | 68.7°F | 48.1°F | 4.45 in |
| June | 80.1°F | 57.7°F | 5.78 in | 78.8°F | 58.1°F | 4.97 in |
| July | 82.8°F | 61.8°F | 5.23 in | 82.4°F | 62.4°F | 4.54 in |
| August | 81.0°F | 59.1°F | 4.46 in | 80.4°F | 60.8°F | 4.30 in |
| September | 74.6°F | 49.6°F | 3.72 in | 73.6°F | 51.8°F | 3.72 in |
| October | 61.4°F | 37.9°F | 3.24 in | 60.3°F | 40.6°F | 3.12 in |
| November | 45.9°F | 26.0°F | 2.26 in | 45.1°F | 28.5°F | 2.37 in |
| December | 33.1°F | 16.0°F | 1.84 in | 32.5°F | 18.2°F | 1.89 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 →