Climate twins of Hartsburg, MO
These are the US cities whose 12-month climate pattern most closely matches Hartsburg'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: Hartsburg vs its climate twin
Top match: East St. Louis, IL
| Month | Hartsburg | East St. Louis | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 39.5°F | 22.5°F | 2.12 in | 40.2°F | 24.1°F | 2.46 in |
| February | 45.1°F | 26.4°F | 2.12 in | 45.6°F | 27.6°F | 1.96 in |
| March | 56.3°F | 35.6°F | 2.97 in | 56.3°F | 36.0°F | 3.27 in |
| April | 67.2°F | 45.6°F | 4.88 in | 67.5°F | 45.5°F | 4.48 in |
| May | 75.9°F | 55.7°F | 4.77 in | 76.7°F | 56.5°F | 4.84 in |
| June | 84.5°F | 64.7°F | 4.23 in | 85.7°F | 64.7°F | 4.36 in |
| July | 88.5°F | 68.5°F | 4.13 in | 89.0°F | 68.8°F | 3.70 in |
| August | 87.7°F | 66.7°F | 4.14 in | 87.8°F | 66.1°F | 3.68 in |
| September | 80.1°F | 58.3°F | 3.83 in | 80.7°F | 57.1°F | 3.36 in |
| October | 68.2°F | 46.8°F | 3.47 in | 69.4°F | 46.1°F | 3.07 in |
| November | 54.7°F | 36.0°F | 2.68 in | 55.3°F | 35.9°F | 3.34 in |
| December | 43.6°F | 26.7°F | 2.09 in | 44.3°F | 28.6°F | 2.32 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 →