Weather in Yellowstone: August
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Average day temperature: | 68.6°F |
| Average night temperature: | 47.4°F | |
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Number of sunny days: | 22 days |
| Day length: | 13.3 - 14.6 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.8 in. | |
| more information | ||
14 days
forecast
forecast
| Yellowstone |
weather in
September
September
| Yellowstone |
Air temperature in August, °F
Show year:
2025
2024
2023
The highest day temperature during August of 2025 was 77°F. At the same time the lowest night temperature was 41°F. Daily and nightly averages during August were 68.8°F and 50.5°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 Yellowstone in August is 1.8 in. Other months of the year show relatively similar values.
Wind speed in August, mph
The average wind speed value in August is 6.1 mph It makes August one of the least 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: 10.3.
Best time for vacation in Yellowstone
Yellowstone on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Yellowstone
Local time: 09:37
August 18, tuesday
1200
68°F
E
11 mph
11 mph
1500
70°F
E
17 mph
17 mph
1800
68°F
SE
11 mph
11 mph
2100
50°F
NW
4 mph
4 mph
August 19, wednesday
0000
46°F
N
2 mph
2 mph
0300
46°F
W
1 mph
1 mph
0600
45°F
N
2 mph
2 mph
0900
59°F
NE
3 mph
3 mph
