Climate twins of St. Francis, WI
These are the US cities whose 12-month climate pattern most closely matches St. Francis'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: St. Francis vs its climate twin
Top match: Adrian, MI
| Month | St. Francis | Adrian | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 30.9°F | 17.2°F | 1.79 in | 33.3°F | 16.9°F | 2.24 in |
| February | 34.2°F | 20.0°F | 1.69 in | 36.4°F | 18.0°F | 1.99 in |
| March | 44.2°F | 28.7°F | 2.20 in | 46.9°F | 25.9°F | 2.49 in |
| April | 54.7°F | 37.8°F | 3.86 in | 59.9°F | 36.1°F | 3.49 in |
| May | 66.5°F | 47.8°F | 3.54 in | 71.8°F | 46.7°F | 3.99 in |
| June | 76.8°F | 58.4°F | 4.38 in | 81.0°F | 56.5°F | 4.10 in |
| July | 81.9°F | 64.7°F | 3.40 in | 84.7°F | 60.3°F | 3.40 in |
| August | 80.3°F | 64.2°F | 3.65 in | 82.5°F | 58.8°F | 3.63 in |
| September | 73.5°F | 56.4°F | 3.16 in | 75.9°F | 51.0°F | 3.29 in |
| October | 61.3°F | 44.7°F | 2.78 in | 63.1°F | 40.2°F | 2.95 in |
| November | 47.8°F | 33.1°F | 2.24 in | 49.2°F | 30.5°F | 2.82 in |
| December | 36.1°F | 23.0°F | 1.88 in | 37.9°F | 22.6°F | 2.29 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 →