Climate twins of Tolna, ND
These are the US cities whose 12-month climate pattern most closely matches Tolna'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: Tolna vs its climate twin
Top match: Max, ND
| Month | Tolna | Max | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 16.6°F | -1.3°F | 0.55 in | 18.4°F | 0.3°F | 0.57 in |
| February | 21.4°F | 2.6°F | 0.48 in | 22.9°F | 3.9°F | 0.50 in |
| March | 34.4°F | 15.7°F | 0.83 in | 35.2°F | 16.1°F | 0.79 in |
| April | 52.0°F | 29.7°F | 1.20 in | 51.4°F | 29.5°F | 1.17 in |
| May | 66.5°F | 42.4°F | 2.73 in | 64.8°F | 42.4°F | 2.82 in |
| June | 75.7°F | 53.5°F | 3.55 in | 74.0°F | 52.9°F | 3.65 in |
| July | 80.8°F | 57.8°F | 3.64 in | 80.7°F | 57.5°F | 2.79 in |
| August | 79.8°F | 55.6°F | 2.55 in | 80.5°F | 55.6°F | 2.14 in |
| September | 70.7°F | 46.4°F | 2.11 in | 70.1°F | 45.9°F | 1.68 in |
| October | 54.3°F | 32.9°F | 1.81 in | 53.4°F | 32.2°F | 1.36 in |
| November | 36.3°F | 18.8°F | 0.88 in | 36.0°F | 18.0°F | 0.68 in |
| December | 21.9°F | 5.8°F | 0.81 in | 23.5°F | 6.4°F | 0.57 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 →