S
M
T
W
T
F
S
26
89°
66°
27
92°
67°
28
93°
69°
29
94°
70°
30
95°
71°
31
95°
72°
1
94°
71°
2
96°
72°
3
95°
72°
4
95°
71°
5
94°
71°
6
94°
70°
7
93°
71°
8
94°
72°
9
94°
72°
10
95°
71°
11
95°
72°
12
94°
71°
13
93°
68°
14
89°
70°
15
92°
70°
16
92°
68°
17
91°
67°
18
90°
66°
19
89°
67°
20
90°
67°
21
91°
70°
22
93°
72°
23
94°
71°
24
94°
71°
25
95°
72°
26
94°
70°
27
93°
70°
28
93°
69°
29
92°
65°
30
91°
64°
31
88°
66°
1
91°
66°
2
92°
65°
3
92°
64°
4
88°
62°
5
86°
62°
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 86° to 96°, with overnight lows between 62° and 72°. The average high for August is 92° with an average low of 69°. 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.