S
M
T
W
T
F
S
30
69°
50°
31
82°
52°
1
88°
60°
2
78°
60°
3
68°
58°
4
60°
48°
5
72°
51°
6
77°
45°
7
79°
49°
8
84°
50°
9
87°
56°
10
76°
55°
11
75°
42°
12
77°
45°
13
74°
45°
14
70°
46°
15
70°
54°
16
77°
43°
17
79°
43°
18
74°
44°
19
74°
42°
20
76°
45°
21
75°
46°
22
67°
45°
23
60°
40°
24
63°
46°
25
62°
42°
26
61°
41°
27
60°
43°
28
60°
42°
29
61°
40°
30
60°
41°
1
56°
34°
2
55°
34°
3
50°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sun Peaks
Sun Peaks's September 2026 forecast shows daily high temperatures ranging from 50° to 76°, with overnight lows between 31° and 46°. The average high for September is 63° with an average low of 41°. 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 Sun Peaks. See also: October | November | December.