Climate twins of Jansen, NE
These are the US cities whose 12-month climate pattern most closely matches Jansen'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: Jansen vs its climate twin
Top match: New Market, IA
| Month | Jansen | New Market | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 36.1°F | 14.1°F | 0.77 in | 32.7°F | 11.9°F | 0.79 in |
| February | 41.1°F | 17.7°F | 0.96 in | 37.7°F | 16.4°F | 1.16 in |
| March | 53.1°F | 27.5°F | 1.70 in | 50.8°F | 27.5°F | 2.22 in |
| April | 63.8°F | 37.6°F | 2.96 in | 62.9°F | 38.0°F | 3.32 in |
| May | 73.6°F | 49.3°F | 5.10 in | 73.0°F | 50.3°F | 5.60 in |
| June | 83.8°F | 60.0°F | 5.00 in | 82.3°F | 60.8°F | 5.33 in |
| July | 88.4°F | 64.8°F | 4.33 in | 85.8°F | 64.1°F | 4.77 in |
| August | 86.4°F | 62.5°F | 3.55 in | 84.1°F | 61.5°F | 3.95 in |
| September | 79.5°F | 53.2°F | 3.10 in | 77.9°F | 51.8°F | 3.30 in |
| October | 66.9°F | 40.2°F | 2.39 in | 65.7°F | 39.4°F | 2.85 in |
| November | 52.0°F | 27.7°F | 1.45 in | 50.1°F | 27.1°F | 1.98 in |
| December | 39.8°F | 18.2°F | 1.08 in | 37.6°F | 17.4°F | 1.38 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 →