Climate twins of Washington, IN
These are the US cities whose 12-month climate pattern most closely matches Washington'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: Washington vs its climate twin
Top match: Elkville, IL
| Month | Washington | Elkville | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 40.4°F | 23.9°F | 3.59 in | 40.4°F | 23.9°F | 3.16 in |
| February | 45.6°F | 27.5°F | 2.88 in | 45.7°F | 27.7°F | 2.90 in |
| March | 56.5°F | 35.8°F | 4.02 in | 55.9°F | 36.1°F | 4.39 in |
| April | 68.5°F | 45.4°F | 4.83 in | 67.5°F | 46.1°F | 5.35 in |
| May | 77.4°F | 56.0°F | 5.51 in | 76.1°F | 56.1°F | 5.51 in |
| June | 85.0°F | 63.9°F | 5.15 in | 84.4°F | 64.3°F | 4.79 in |
| July | 87.4°F | 66.8°F | 4.14 in | 87.2°F | 67.6°F | 3.94 in |
| August | 86.3°F | 65.1°F | 3.17 in | 86.4°F | 64.9°F | 3.30 in |
| September | 81.1°F | 57.6°F | 3.50 in | 80.0°F | 56.6°F | 3.40 in |
| October | 69.9°F | 46.9°F | 3.60 in | 69.0°F | 46.0°F | 3.66 in |
| November | 55.6°F | 36.4°F | 3.91 in | 55.0°F | 35.5°F | 4.07 in |
| December | 44.7°F | 28.4°F | 3.68 in | 44.4°F | 28.0°F | 3.24 in |
Cities that consider Washington their climate twin
These US cities have Washington in their top 3 most-similar list — meaning if you were to move from any of these places, Washington would feel familiar.
- Dowell, IL (ranks Washington #1)
- St. Johns, IL (ranks Washington #1)
- Elkville, IL (ranks Washington #1)
- Du Quoin, IL (ranks Washington #1)
- Worthville, KY (ranks Washington #2)
- Vevay, IN (ranks Washington #2)
- Ghent, KY (ranks Washington #2)
- Little Flock, AR (ranks Washington #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 →