S
M
T
W
T
F
S
30
72°
42°
31
76°
47°
1
77°
47°
2
74°
43°
3
70°
43°
4
69°
41°
5
69°
44°
6
70°
40°
7
70°
38°
8
69°
40°
9
67°
44°
10
70°
47°
11
72°
43°
12
72°
47°
13
74°
47°
14
74°
46°
15
73°
47°
16
75°
45°
17
75°
44°
18
74°
45°
19
75°
44°
20
74°
46°
21
75°
45°
22
75°
47°
23
74°
46°
24
71°
44°
25
63°
43°
26
60°
41°
27
61°
42°
28
64°
41°
29
66°
43°
30
62°
41°
1
60°
42°
2
61°
40°
3
68°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Diamond Peak
Diamond Peak's September 2026 forecast shows daily high temperatures ranging from 60° to 77°, with overnight lows between 38° and 47°. The average high for September is 70° with an average low of 44°. 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 Diamond Peak. See also: October | November | December.
