Climate twins of Great Falls, MT
These are the US cities whose 12-month climate pattern most closely matches Great Falls'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: Great Falls vs its climate twin
Top match: Roundup, MT
| Month | Great Falls | Roundup | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 36.8°F | 17.5°F | 0.61 in | 37.2°F | 13.1°F | 0.37 in |
| February | 38.6°F | 18.7°F | 0.58 in | 40.7°F | 14.9°F | 0.42 in |
| March | 48.2°F | 25.2°F | 0.63 in | 50.6°F | 22.1°F | 0.71 in |
| April | 58.3°F | 33.2°F | 1.79 in | 59.9°F | 30.0°F | 1.71 in |
| May | 67.0°F | 41.9°F | 2.66 in | 69.1°F | 39.3°F | 2.55 in |
| June | 75.4°F | 49.6°F | 2.74 in | 78.3°F | 47.8°F | 2.89 in |
| July | 85.8°F | 55.0°F | 1.34 in | 88.9°F | 53.5°F | 1.70 in |
| August | 83.9°F | 53.4°F | 1.30 in | 87.9°F | 51.1°F | 1.21 in |
| September | 72.6°F | 44.7°F | 1.39 in | 76.9°F | 42.4°F | 1.20 in |
| October | 59.1°F | 35.9°F | 1.13 in | 60.9°F | 31.7°F | 1.22 in |
| November | 45.3°F | 26.0°F | 0.70 in | 46.6°F | 21.8°F | 0.49 in |
| December | 36.7°F | 19.8°F | 0.56 in | 37.2°F | 14.2°F | 0.41 in |
Cities that consider Great Falls their climate twin
These US cities have Great Falls in their top 3 most-similar list — meaning if you were to move from any of these places, Great Falls would feel familiar.
- Roundup, MT (ranks Great Falls #2)
- Dix, NE (ranks Great Falls #2)
- Kimball, NE (ranks Great Falls #2)
- St. Ignatius, MT (ranks Great Falls #1)
- Cheyenne, WY (ranks Great Falls #1)
- Grass Range, MT (ranks Great Falls #3)
- Burns, WY (ranks Great Falls #2)
- Grover, CO (ranks Great Falls #2)
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 →