Weather in Boise: August
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Average day temperature: | 86.7°F |
| Average night temperature: | 68.2°F | |
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Number of sunny days: | 25 days |
| Day length: | 13.2 - 14.6 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.4 in. | |
| more information | ||
14 days
forecast
forecast
| Boise |
weather in
September
September
| Boise |
Air temperature in August, °F
Show year:
2026
2025
2024
The highest day temperature during August of 2026 was 99°F. At the same time the lowest night temperature was 55°F. Daily and nightly averages during August were 90.8°F and 68.4°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 Boise in August is 0.4 in. Other months of the year show relatively similar values.
Wind speed in August, mph
The average wind speed value in August is 6.2 mph
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: 11.5.
Best time for vacation in Boise
Boise on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boise
Local time: 03:17
September 19, saturday
0600
55°F
SE
5 mph
5 mph
0900
59°F
E
9 mph
9 mph
1200
68°F
SE
11 mph
11 mph
1500
75°F
S
13 mph
13 mph
1800
75°F
S
14 mph
14 mph
2100
68°F
S
7 mph
7 mph
September 20, sunday
0000
64°F
SW
2 mph
2 mph
0300
61°F
W
5 mph
5 mph
