S
M
T
W
T
F
S
26
84°
70°
27
84°
69°
28
83°
63°
29
84°
68°
30
87°
70°
31
90°
70°
1
97°
64°
2
96°
62°
3
96°
62°
4
96°
60°
5
90°
62°
6
89°
64°
7
85°
63°
8
89°
62°
9
90°
65°
10
87°
64°
11
81°
63°
12
71°
65°
13
74°
60°
14
75°
63°
15
81°
65°
16
82°
63°
17
85°
63°
18
80°
57°
19
88°
74°
20
87°
71°
21
86°
67°
22
89°
62°
23
88°
62°
24
88°
62°
25
90°
64°
26
92°
65°
27
89°
68°
28
87°
65°
29
83°
62°
30
81°
59°
31
87°
58°
1
87°
58°
2
85°
53°
3
84°
55°
4
83°
56°
5
83°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Idyllwild
Idyllwild's August 2026 forecast shows daily high temperatures ranging from 83° to 87°, with overnight lows between 53° and 68°. The average high for August is 85° 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 Idyllwild. See also: September | October | November.