Climate twins of St. Peter, MN
These are the US cities whose 12-month climate pattern most closely matches St. Peter'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. Peter vs its climate twin
Top match: New Auburn, WI
| Month | St. Peter | New Auburn | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 21.9°F | 3.1°F | 0.96 in | 21.3°F | 3.4°F | 1.00 in |
| February | 26.7°F | 6.9°F | 0.96 in | 26.4°F | 6.5°F | 0.94 in |
| March | 39.9°F | 20.6°F | 1.79 in | 39.1°F | 19.4°F | 1.58 in |
| April | 54.8°F | 32.9°F | 3.06 in | 54.2°F | 32.7°F | 2.93 in |
| May | 67.8°F | 46.3°F | 4.04 in | 67.7°F | 45.4°F | 3.73 in |
| June | 77.8°F | 57.0°F | 5.13 in | 77.2°F | 55.6°F | 4.51 in |
| July | 81.9°F | 61.2°F | 4.41 in | 81.4°F | 59.6°F | 4.14 in |
| August | 79.4°F | 58.8°F | 3.56 in | 79.1°F | 57.0°F | 3.98 in |
| September | 72.2°F | 48.7°F | 3.16 in | 71.0°F | 48.4°F | 3.32 in |
| October | 58.2°F | 35.4°F | 2.50 in | 56.4°F | 35.6°F | 2.82 in |
| November | 41.8°F | 22.7°F | 1.68 in | 40.3°F | 23.9°F | 1.74 in |
| December | 27.5°F | 10.9°F | 1.17 in | 27.0°F | 11.2°F | 1.22 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 →