Climate twins of Keokuk, IA
These are the US cities whose 12-month climate pattern most closely matches Keokuk'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: Keokuk vs its climate twin
Top match: McNabb, IL
| Month | Keokuk | McNabb | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 33.0°F | 16.7°F | 1.61 in | 32.3°F | 16.8°F | 1.95 in |
| February | 38.0°F | 20.3°F | 1.82 in | 37.1°F | 20.1°F | 1.80 in |
| March | 49.7°F | 30.6°F | 2.54 in | 50.1°F | 30.1°F | 2.46 in |
| April | 62.4°F | 41.4°F | 4.21 in | 63.5°F | 40.5°F | 3.85 in |
| May | 72.8°F | 52.6°F | 5.26 in | 73.7°F | 51.3°F | 4.76 in |
| June | 82.0°F | 62.5°F | 5.21 in | 81.7°F | 61.4°F | 4.55 in |
| July | 85.6°F | 66.6°F | 4.08 in | 84.5°F | 64.5°F | 3.89 in |
| August | 84.0°F | 64.8°F | 3.77 in | 82.9°F | 62.4°F | 3.77 in |
| September | 77.4°F | 56.3°F | 3.42 in | 77.1°F | 54.5°F | 3.45 in |
| October | 65.0°F | 44.4°F | 3.32 in | 65.2°F | 43.0°F | 3.31 in |
| November | 50.5°F | 32.6°F | 2.56 in | 49.9°F | 32.3°F | 2.60 in |
| December | 38.2°F | 22.5°F | 1.95 in | 36.7°F | 21.8°F | 2.19 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 →