S
M
T
W
T
F
S
30
88°
57°
31
88°
56°
1
87°
57°
2
88°
57°
3
88°
59°
4
86°
56°
5
87°
53°
6
87°
48°
7
80°
46°
8
79°
48°
9
79°
50°
10
83°
52°
11
85°
51°
12
85°
52°
13
84°
54°
14
86°
54°
15
85°
48°
16
84°
49°
17
83°
51°
18
82°
53°
19
83°
50°
20
83°
46°
21
81°
51°
22
76°
49°
23
73°
46°
24
75°
50°
25
75°
47°
26
78°
45°
27
75°
46°
28
74°
49°
29
74°
43°
30
72°
48°
1
72°
51°
2
79°
48°
3
72°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Idyllwild-Pine Cove
Idyllwild-Pine Cove's September 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 43° and 59°. The average high for September is 81° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Idyllwild-Pine Cove. See also: October | November | December.
