ClimateExplore the planning map
Climate · Big Sky

Big Sky in August

Warm and damp, as the days shorten.

Typical weather, averaged over 30 years

August in Big Sky is warm: highs near 78°F, lows near 48°F. Rain falls on about three days a week, and the days shorten by 1 hour 21 minutes from the first week to the last.August in Big Sky is warm: highs near 26°C, lows near 9°C. Rain falls on about three days a week, and the days shorten by 1 hour 21 minutes from the first week to the last.

High
78°F26°Caverage
Low
48°F9°Caverage
Wet days
3a week · 36% of days
Daylight
14h 01mon average

Is August a good time to visit Big Sky?

Yes. August is one of Big Sky's best months (July to August).

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 August sits in the year

week by week

Temperature

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

Chance of a wet day

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

Cloud cover

31% cover in August, against 30% to 65% through the year.

Daylight

14h 01m in August, against 8h 48m to 15h 35m through the year.

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

Either side

  1. July78°26°low 48°low 9°3 wet days a weekRain on about three days a week.
  2. August78°26°low 48°low 9°3 wet days a weekRain on about three days a week.
  3. September68°20°low 40°low 4°3 wet days a weekRain on about three days a week.

Where Big Sky sits, in August

America/Denver
this place
typical high in August 40°F4°C95°F35°C
Sunrise, mid-August
6:25 AMsets 8:35 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 August, 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 August

high · low · wet days
See August 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.