Climate twins of Charleston, MO
These are the US cities whose 12-month climate pattern most closely matches Charleston'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: Charleston vs its climate twin
Top match: Tennyson, IN
| Month | Charleston | Tennyson | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 43.4°F | 26.0°F | 3.80 in | 42.1°F | 25.4°F | 3.52 in |
| February | 48.2°F | 29.5°F | 3.88 in | 47.4°F | 28.6°F | 3.59 in |
| March | 58.6°F | 37.6°F | 4.85 in | 57.7°F | 36.4°F | 4.93 in |
| April | 69.9°F | 47.5°F | 5.38 in | 69.9°F | 46.1°F | 5.52 in |
| May | 78.3°F | 57.7°F | 5.08 in | 78.5°F | 56.2°F | 5.14 in |
| June | 85.9°F | 66.1°F | 4.37 in | 86.3°F | 64.5°F | 4.56 in |
| July | 88.7°F | 69.6°F | 4.10 in | 88.6°F | 67.9°F | 4.69 in |
| August | 87.8°F | 67.5°F | 3.18 in | 87.5°F | 65.8°F | 3.22 in |
| September | 81.7°F | 59.6°F | 3.51 in | 81.7°F | 58.3°F | 3.80 in |
| October | 70.9°F | 47.7°F | 4.14 in | 70.3°F | 47.0°F | 3.75 in |
| November | 57.9°F | 37.4°F | 4.46 in | 56.7°F | 36.5°F | 4.22 in |
| December | 46.7°F | 30.1°F | 4.25 in | 45.8°F | 29.2°F | 4.23 in |
Cities that consider Charleston their climate twin
These US cities have Charleston in their top 3 most-similar list — meaning if you were to move from any of these places, Charleston would feel familiar.
- Boonville, IN (ranks Charleston #1)
- Richland, IN (ranks Charleston #1)
- Trenton, KY (ranks Charleston #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 →