S
M
T
W
T
F
S
26
91°
72°
27
89°
68°
28
91°
65°
29
90°
64°
30
90°
67°
31
92°
58°
1
94°
58°
2
95°
57°
3
90°
56°
4
89°
58°
5
90°
59°
6
89°
57°
7
86°
57°
8
88°
56°
9
87°
59°
10
86°
59°
11
87°
59°
12
85°
57°
13
85°
58°
14
86°
59°
15
85°
58°
16
85°
59°
17
86°
59°
18
86°
58°
19
87°
59°
20
88°
59°
21
87°
58°
22
88°
59°
23
87°
58°
24
86°
58°
25
85°
57°
26
85°
55°
27
80°
52°
28
79°
51°
29
78°
50°
30
79°
50°
31
79°
51°
1
80°
50°
2
79°
50°
3
78°
49°
4
77°
49°
5
78°
50°
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 77° to 95°, with overnight lows between 49° and 72°. The average high for August is 86° with an average low of 57°. 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.