Weather in Sun Valley: August
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Average day temperature: | 74.6°F |
| Average night temperature: | 56.1°F | |
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Number of sunny days: | 21 days |
| Day length: | 13.2 - 14.6 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.8 in. | |
| more information | ||
14 days
forecast
forecast
| Sun Valley |
weather in
September
September
| Sun Valley |
Air temperature in August, °F
Show year:
2026
2025
2024
The highest day temperature during August of 2026 was 89°F. At the same time the lowest night temperature was 41°F. Daily and nightly averages during August were 75.4°F and 51.5°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 Sun Valley in August is 0.8 in. Other months of the year show relatively similar values.
Wind speed in August, mph
The average wind speed value in August is 6.4 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: 10.4.
Best time for vacation in Sun Valley
Sun Valley on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Sun Valley
Local time: 03:17
September 19, saturday
0600
41°F
S
5 mph
5 mph
0900
45°F
SW
6 mph
6 mph
1200
52°F
N
2 mph
2 mph
1500
46°F
NE
4 mph
4 mph
1800
48°F
SW
1 mph
1 mph
2100
43°F
SW
4 mph
4 mph
September 20, sunday
0000
41°F
SW
5 mph
5 mph
0300
41°F
SW
6 mph
6 mph
