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Big Sky in October

Cool and damp, as the days shorten.

Typical weather, averaged over 30 years

October in Big Sky is cool: highs near 55°F, lows near 29°F. Rain or snow falls on about three days a week, and the days shorten by 1 hour 5 minutes from the first week to the last.October in Big Sky is cool: highs near 13°C, lows near -2°C. Rain or snow falls on about three days a week, and the days shorten by 1 hour 5 minutes from the first week to the last.

High
55°F13°Caverage
Low
29°F-2°Caverage
Wet days
3a week · 38% of days
Daylight
10h 49mon average

Is October a good time to visit Big Sky?

October sits outside Big Sky's best months, which run from July to August. Expect cool days and rain or snow on about three days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How October sits in the year

week by week

Temperature

Highs near 55°F in October, against 29°F to 78°F through the year.Highs near 13°C in October, against -2°C to 26°C through the year.

Chance of a wet day

38% of days in October, against 36% to 60% through the year.

Cloud cover

48% cover in October, against 30% to 65% through the year.

Daylight

10h 49m in October, against 8h 48m to 15h 35m through the year.

Week by week, lightly smoothed, with October shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. September68°20°low 40°low 4°3 wet days a weekRain on about three days a week.
  2. October55°13°low 29°low -2°3 wet days a weekRain on about three days a week.
  3. November40°4°low 16°low -9°3 wet days a weekRain on about three days a week.

Where Big Sky sits, in October

America/Denver
this place
typical high in October 40°F4°C95°F35°C
Sunrise, mid-October
7:40 AMsets 6:42 PM
Above the sea
2,134 mhigh country
Latitude
45.3°Nnorthern hemisphere
Nearest of ours
Moose176 km south

The land around Big Sky, shaded by its typical high in October, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in United States in October

high · low · wet days
See October on the planning mapThe whole year in Big Sky

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Big Sky. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (2,134 m) against the climate model's (2,477 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (2,134 m) against the climate model's (2,477 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.