Temperature
Pleasant by day, cold at night.
75°Ftypical July high
Typical range
Mild days with cool nights and plenty of sun.

Pleasant by day, cold at night.
Several rainy days. About 9 wet days, the lowest monthly average.
Plenty of sun this month.
In July, afternoons feel about 65° and nights feel near 42°.
Mostly clear skies this month.
Calm winds are typical in July.
July late afternoons are around 72°F, easing to about 67°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 25 | 11 | 1.5 | 10 | 7.1 | 76 |
| Feb | 27 | 12 | 1.7 | 11 | 8.3 | 75 |
| Mar | 35 | 19 | 2.2 | 13 | 10.0 | 71 |
| Apr | 41 | 23 | 3.2 | 15 | 11.1 | 69 |
| May | 51 | 30 | 3.8 | 17 | 12.4 | 70 |
| Jun | 63 | 38 | 3.7 | 15 | 13.4 | 65 |
| Jul | 75 | 46 | 1.5 | 9 | 14.4 | 54 |
| Aug | 73 | 44 | 1.8 | 10 | 12.8 | 52 |
| Sep | 63 | 38 | 2.1 | 9 | 11.1 | 56 |
| Oct | 47 | 27 | 2.5 | 11 | 9.1 | 67 |
| Nov | 33 | 16 | 1.7 | 10 | 7.5 | 74 |
| Dec | 25 | 10 | 1.7 | 11 | 6.5 | 77 |
Similar climates
Want a side-by-side climate view? Compare Big Sky with Breckenridge.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 7, 2026
Data & methodology