Climate twins of Grantsville, MD
These are the US cities whose 12-month climate pattern most closely matches Grantsville'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: Grantsville vs its climate twin
Top match: Port Dickinson, NY
| Month | Grantsville | Port Dickinson | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 34.4°F | 16.7°F | 3.01 in | 29.5°F | 15.5°F | 2.62 in |
| February | 37.6°F | 16.7°F | 2.70 in | 32.2°F | 16.9°F | 2.41 in |
| March | 45.8°F | 23.6°F | 3.65 in | 40.7°F | 24.0°F | 3.05 in |
| April | 58.7°F | 33.0°F | 3.53 in | 54.2°F | 35.0°F | 3.63 in |
| May | 67.8°F | 43.1°F | 4.35 in | 66.2°F | 46.1°F | 3.78 in |
| June | 75.8°F | 52.0°F | 4.34 in | 74.0°F | 54.9°F | 4.69 in |
| July | 79.5°F | 56.3°F | 4.11 in | 78.4°F | 59.4°F | 3.80 in |
| August | 78.5°F | 54.4°F | 3.67 in | 76.7°F | 58.0°F | 4.10 in |
| September | 73.2°F | 47.7°F | 3.62 in | 69.5°F | 50.6°F | 4.01 in |
| October | 61.1°F | 36.6°F | 2.98 in | 57.1°F | 40.5°F | 3.76 in |
| November | 49.3°F | 27.8°F | 2.66 in | 45.1°F | 30.7°F | 3.11 in |
| December | 38.9°F | 21.3°F | 3.06 in | 34.3°F | 21.9°F | 3.08 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 →