Climate twins of McLean, IL
These are the US cities whose 12-month climate pattern most closely matches McLean'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: McLean vs its climate twin
Top match: Otterbein, IN
| Month | McLean | Otterbein | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 30.9°F | 15.6°F | 2.40 in | 32.4°F | 16.3°F | 2.21 in |
| February | 36.1°F | 19.3°F | 2.08 in | 36.8°F | 19.5°F | 1.93 in |
| March | 48.5°F | 28.9°F | 2.61 in | 48.2°F | 28.7°F | 2.59 in |
| April | 62.0°F | 38.9°F | 4.08 in | 61.3°F | 39.2°F | 4.00 in |
| May | 72.2°F | 50.4°F | 4.83 in | 72.2°F | 50.9°F | 4.70 in |
| June | 81.3°F | 59.6°F | 4.58 in | 80.8°F | 60.3°F | 4.85 in |
| July | 84.2°F | 63.4°F | 4.05 in | 83.0°F | 62.5°F | 4.24 in |
| August | 82.6°F | 61.4°F | 4.13 in | 81.7°F | 60.1°F | 3.66 in |
| September | 76.3°F | 54.1°F | 3.15 in | 77.0°F | 52.2°F | 3.12 in |
| October | 62.7°F | 42.2°F | 3.45 in | 64.5°F | 41.4°F | 3.03 in |
| November | 47.5°F | 30.3°F | 2.80 in | 49.6°F | 31.5°F | 3.02 in |
| December | 35.4°F | 21.2°F | 2.28 in | 37.4°F | 22.2°F | 2.35 in |
Cities that consider McLean their climate twin
These US cities have McLean in their top 3 most-similar list — meaning if you were to move from any of these places, McLean would feel familiar.
- Etna Green, IN (ranks McLean #2)
- Leesburg, IN (ranks McLean #2)
- Pierceton, IN (ranks McLean #2)
- Warsaw, IN (ranks McLean #2)
- Winona Lake, IN (ranks McLean #2)
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 →