S
M
T
W
T
F
S
26
88°
60°
27
88°
60°
28
90°
62°
29
91°
62°
30
89°
58°
31
90°
60°
1
92°
62°
2
93°
62°
3
93°
61°
4
90°
62°
5
88°
61°
6
91°
62°
7
92°
62°
8
92°
61°
9
90°
61°
10
91°
54°
11
85°
57°
12
89°
56°
13
91°
57°
14
93°
60°
15
92°
59°
16
92°
61°
17
93°
62°
18
93°
62°
19
92°
61°
20
93°
61°
21
92°
60°
22
92°
60°
23
91°
59°
24
92°
59°
25
91°
60°
26
91°
60°
27
90°
58°
28
85°
58°
29
89°
56°
30
85°
54°
31
85°
52°
1
86°
51°
2
84°
50°
3
83°
49°
4
82°
50°
5
82°
48°
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 82° to 93°, with overnight lows between 48° and 62°. The average high for August is 90° 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.
