S
M
T
W
T
F
S
26
92°
62°
27
91°
62°
28
89°
60°
29
85°
58°
30
85°
56°
31
86°
60°
1
92°
62°
2
91°
62°
3
94°
61°
4
94°
62°
5
93°
63°
6
94°
60°
7
93°
61°
8
92°
60°
9
93°
58°
10
92°
59°
11
92°
58°
12
93°
59°
13
93°
58°
14
92°
59°
15
90°
58°
16
86°
55°
17
86°
56°
18
85°
53°
19
85°
56°
20
86°
57°
21
84°
53°
22
84°
54°
23
85°
56°
24
86°
57°
25
88°
59°
26
90°
58°
27
90°
58°
28
89°
57°
29
89°
55°
30
86°
53°
31
85°
52°
1
85°
53°
2
86°
54°
3
89°
55°
4
89°
57°
5
88°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Yosemite Valley
Yosemite Valley's August 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 52° and 63°. The average high for August is 89° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Yosemite Valley. See also: September | October | November.
