Climate twins of Castle Rock, CO
These are the US cities whose 12-month climate pattern most closely matches Castle Rock'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: Castle Rock vs its climate twin
Top match: Starkville, CO
| Month | Castle Rock | Starkville | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 45.6°F | 18.0°F | 0.55 in | 47.7°F | 15.2°F | 0.56 in |
| February | 46.7°F | 19.9°F | 0.70 in | 49.6°F | 17.7°F | 0.58 in |
| March | 53.8°F | 26.5°F | 1.54 in | 56.9°F | 24.3°F | 1.20 in |
| April | 59.1°F | 32.5°F | 2.08 in | 62.8°F | 30.7°F | 1.73 in |
| May | 68.4°F | 41.6°F | 1.97 in | 72.4°F | 40.1°F | 1.71 in |
| June | 80.2°F | 50.5°F | 2.20 in | 83.2°F | 49.8°F | 1.55 in |
| July | 85.7°F | 56.4°F | 2.32 in | 86.9°F | 54.3°F | 2.97 in |
| August | 83.6°F | 54.7°F | 2.52 in | 84.4°F | 52.6°F | 2.66 in |
| September | 76.7°F | 46.6°F | 1.39 in | 78.7°F | 45.1°F | 1.40 in |
| October | 64.8°F | 34.6°F | 0.85 in | 67.4°F | 33.2°F | 1.31 in |
| November | 53.9°F | 25.7°F | 0.79 in | 55.6°F | 23.6°F | 0.82 in |
| December | 45.7°F | 18.0°F | 0.69 in | 47.7°F | 15.5°F | 0.73 in |
Cities that consider Castle Rock their climate twin
These US cities have Castle Rock in their top 3 most-similar list — meaning if you were to move from any of these places, Castle Rock would feel familiar.
- Cokedale, CO (ranks Castle Rock #1)
- Starkville, CO (ranks Castle Rock #1)
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 →