Climate twins of Petersburg, TN
These are the US cities whose 12-month climate pattern most closely matches Petersburg'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: Petersburg vs its climate twin
Top match: Middleton, TN
| Month | Petersburg | Middleton | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 49.1°F | 27.5°F | 4.47 in | 49.0°F | 28.1°F | 4.26 in |
| February | 54.0°F | 29.9°F | 4.73 in | 53.5°F | 31.1°F | 4.95 in |
| March | 62.6°F | 36.2°F | 5.56 in | 62.3°F | 38.7°F | 5.86 in |
| April | 72.4°F | 44.2°F | 5.06 in | 71.9°F | 47.6°F | 5.61 in |
| May | 80.6°F | 54.2°F | 4.71 in | 79.1°F | 57.1°F | 5.33 in |
| June | 88.0°F | 62.8°F | 4.87 in | 86.4°F | 65.3°F | 4.71 in |
| July | 91.0°F | 66.6°F | 4.44 in | 89.5°F | 69.0°F | 4.39 in |
| August | 90.8°F | 64.1°F | 4.29 in | 89.1°F | 67.2°F | 3.46 in |
| September | 85.4°F | 56.8°F | 4.52 in | 83.6°F | 59.6°F | 3.90 in |
| October | 74.5°F | 45.2°F | 3.67 in | 73.3°F | 47.5°F | 3.95 in |
| November | 62.3°F | 35.8°F | 4.02 in | 61.3°F | 37.0°F | 4.25 in |
| December | 52.3°F | 30.4°F | 5.73 in | 51.7°F | 31.1°F | 5.47 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 →