Climate twins of Merrimac, WI
These are the US cities whose 12-month climate pattern most closely matches Merrimac'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: Merrimac vs its climate twin
Top match: Walker, IA
| Month | Merrimac | Walker | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 27.4°F | 9.6°F | 1.50 in | 26.4°F | 9.0°F | 1.22 in |
| February | 32.4°F | 12.4°F | 1.52 in | 30.8°F | 13.0°F | 1.29 in |
| March | 44.6°F | 23.5°F | 2.18 in | 44.0°F | 23.9°F | 2.03 in |
| April | 57.8°F | 34.6°F | 4.03 in | 58.4°F | 34.4°F | 3.91 in |
| May | 70.7°F | 47.0°F | 4.60 in | 69.6°F | 46.0°F | 4.78 in |
| June | 80.4°F | 57.2°F | 5.39 in | 79.6°F | 57.3°F | 5.87 in |
| July | 83.9°F | 60.7°F | 4.88 in | 83.1°F | 60.5°F | 4.96 in |
| August | 81.4°F | 58.7°F | 4.35 in | 80.9°F | 58.0°F | 4.29 in |
| September | 74.2°F | 50.0°F | 3.76 in | 74.9°F | 48.8°F | 3.94 in |
| October | 61.1°F | 39.0°F | 2.97 in | 61.1°F | 37.4°F | 3.08 in |
| November | 46.0°F | 27.9°F | 2.30 in | 45.3°F | 25.9°F | 2.22 in |
| December | 33.4°F | 17.1°F | 1.74 in | 32.2°F | 15.6°F | 1.56 in |
Cities that consider Merrimac their climate twin
These US cities have Merrimac in their top 3 most-similar list — meaning if you were to move from any of these places, Merrimac would feel familiar.
- Walker, IA (ranks Merrimac #1)
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 →