Weather in Big Sky: August
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Average day temperature: | 74.3°F |
| Average night temperature: | 54.5°F | |
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Number of sunny days: | 20 days |
| Day length: | 13.3 - 14.7 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.7 in. | |
| more information | ||
14 days
forecast
forecast
| Big Sky |
weather in
September
September
| Big Sky |
Air temperature in August, °F
Show year:
2026
2025
2024
The highest day temperature during August of 2026 was 83°F. At the same time the lowest night temperature was 38°F. Daily and nightly averages during August were 70.3°F and 49.5°F.
Sunny, partly cloudy and cloudy days
Mostly all days in August are sunny but cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in Big Sky in August is 0.7 in. Other months of the year show relatively similar values.
Wind speed in August, mph
The average wind speed value in August is 5.2 mph It makes August one of the most windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 10.0.
Best time for vacation in Big Sky
Big Sky on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Big Sky
Local time: 04:08
September 19, saturday
0600
41°F
N
1 mph
1 mph
0900
46°F
S
2 mph
2 mph
1200
50°F
SE
2 mph
2 mph
1500
45°F
SE
3 mph
3 mph
1800
43°F
N
2 mph
2 mph
2100
41°F
NW
2 mph
2 mph
September 20, sunday
0000
43°F
S
1 mph
1 mph
0300
43°F
SE
2 mph
2 mph
