Climate twins of South El Monte, CA
These are the US cities whose 12-month climate pattern most closely matches South El Monte'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: South El Monte vs its climate twin
Top match: Walnut Creek, CA
| Month | South El Monte | Walnut Creek | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 68.6°F | 46.1°F | 3.56 in | 58.4°F | 41.7°F | 3.46 in |
| February | 68.2°F | 47.1°F | 4.22 in | 63.2°F | 44.1°F | 3.57 in |
| March | 70.9°F | 50.5°F | 2.53 in | 67.7°F | 46.8°F | 2.57 in |
| April | 73.8°F | 52.7°F | 0.61 in | 72.2°F | 49.2°F | 1.23 in |
| May | 75.6°F | 57.6°F | 0.48 in | 78.0°F | 53.1°F | 0.61 in |
| June | 80.8°F | 61.5°F | 0.13 in | 84.6°F | 56.7°F | 0.12 in |
| July | 85.5°F | 65.2°F | 0.04 in | 88.3°F | 58.3°F | 0.00 in |
| August | 87.6°F | 65.5°F | 0.00 in | 88.2°F | 58.8°F | 0.02 in |
| September | 86.7°F | 63.6°F | 0.13 in | 86.1°F | 57.6°F | 0.06 in |
| October | 80.7°F | 57.4°F | 0.61 in | 78.2°F | 53.1°F | 0.68 in |
| November | 74.0°F | 50.6°F | 0.92 in | 66.7°F | 45.9°F | 1.87 in |
| December | 67.8°F | 45.3°F | 2.44 in | 58.7°F | 41.2°F | 3.55 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 →