Climate twins of Birchwood, WI
These are the US cities whose 12-month climate pattern most closely matches Birchwood'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: Birchwood vs its climate twin
Top match: Taopi, MN
| Month | Birchwood | Taopi | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 21.7°F | 2.1°F | 1.30 in | 20.9°F | 4.6°F | 1.02 in |
| February | 26.9°F | 4.4°F | 1.48 in | 25.3°F | 8.2°F | 0.87 in |
| March | 39.3°F | 17.4°F | 2.24 in | 37.9°F | 20.1°F | 1.85 in |
| April | 52.8°F | 29.3°F | 3.52 in | 53.5°F | 31.9°F | 3.90 in |
| May | 67.0°F | 40.0°F | 4.62 in | 66.1°F | 44.3°F | 5.06 in |
| June | 75.0°F | 50.9°F | 5.30 in | 76.2°F | 55.7°F | 5.70 in |
| July | 79.2°F | 55.1°F | 5.11 in | 79.3°F | 58.6°F | 4.66 in |
| August | 76.7°F | 53.0°F | 4.51 in | 77.4°F | 56.0°F | 4.22 in |
| September | 69.0°F | 45.5°F | 4.29 in | 71.1°F | 47.8°F | 4.07 in |
| October | 55.3°F | 33.8°F | 3.77 in | 57.2°F | 35.3°F | 2.95 in |
| November | 39.4°F | 22.3°F | 2.26 in | 40.6°F | 23.4°F | 1.82 in |
| December | 26.8°F | 10.4°F | 1.89 in | 27.1°F | 12.2°F | 1.25 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 →