Climate twins of Henry, IL
These are the US cities whose 12-month climate pattern most closely matches Henry'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: Henry vs its climate twin
Top match: Hannibal, MO
| Month | Henry | Hannibal | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 33.8°F | 18.0°F | 2.07 in | 34.6°F | 17.9°F | 2.11 in |
| February | 38.3°F | 21.5°F | 2.06 in | 39.6°F | 21.6°F | 2.25 in |
| March | 51.4°F | 31.3°F | 2.65 in | 51.4°F | 32.0°F | 2.76 in |
| April | 64.5°F | 41.4°F | 4.00 in | 63.7°F | 42.8°F | 4.33 in |
| May | 75.0°F | 51.7°F | 4.76 in | 73.3°F | 54.0°F | 4.96 in |
| June | 84.4°F | 61.2°F | 4.29 in | 82.1°F | 63.5°F | 4.91 in |
| July | 87.0°F | 65.1°F | 3.97 in | 85.7°F | 67.3°F | 4.11 in |
| August | 85.6°F | 63.0°F | 3.33 in | 84.4°F | 65.2°F | 3.92 in |
| September | 79.6°F | 55.1°F | 3.30 in | 77.9°F | 56.9°F | 3.53 in |
| October | 66.6°F | 43.5°F | 3.16 in | 65.7°F | 44.9°F | 3.39 in |
| November | 51.2°F | 32.6°F | 2.63 in | 51.5°F | 33.5°F | 2.82 in |
| December | 38.3°F | 23.2°F | 2.17 in | 39.3°F | 23.4°F | 2.19 in |
Cities that consider Henry their climate twin
These US cities have Henry in their top 3 most-similar list — meaning if you were to move from any of these places, Henry would feel familiar.
- Quincy, IL (ranks Henry #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 →