Climate twins of Arrow Rock, MO
These are the US cities whose 12-month climate pattern most closely matches Arrow Rock'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: Arrow Rock vs its climate twin
Top match: Milton, IL
| Month | Arrow Rock | Milton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 37.8°F | 18.3°F | 1.98 in | 36.5°F | 18.5°F | 2.03 in |
| February | 43.0°F | 22.6°F | 2.10 in | 41.9°F | 22.3°F | 2.14 in |
| March | 54.4°F | 32.4°F | 2.93 in | 53.0°F | 31.5°F | 2.95 in |
| April | 65.2°F | 42.9°F | 4.41 in | 65.8°F | 42.4°F | 4.14 in |
| May | 74.6°F | 54.0°F | 4.87 in | 75.4°F | 53.9°F | 4.83 in |
| June | 83.2°F | 63.4°F | 4.64 in | 84.1°F | 63.0°F | 5.01 in |
| July | 87.2°F | 67.1°F | 4.39 in | 87.5°F | 66.1°F | 4.10 in |
| August | 86.3°F | 64.8°F | 4.03 in | 86.5°F | 63.7°F | 3.43 in |
| September | 79.0°F | 55.9°F | 4.10 in | 80.1°F | 54.8°F | 3.61 in |
| October | 67.5°F | 43.7°F | 3.45 in | 67.9°F | 43.8°F | 3.01 in |
| November | 54.0°F | 33.1°F | 2.70 in | 53.8°F | 33.3°F | 2.92 in |
| December | 42.4°F | 23.4°F | 1.88 in | 41.5°F | 23.7°F | 2.33 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 →