S
M
T
W
T
F
S
30
86°
46°
31
82°
43°
1
75°
56°
2
91°
54°
3
90°
64°
4
97°
59°
5
93°
63°
6
97°
61°
7
N/A
8
71°
43°
9
69°
52°
10
78°
55°
11
69°
42°
12
66°
46°
13
61°
36°
14
51°
40°
15
60°
46°
16
60°
45°
17
61°
48°
18
60°
47°
19
63°
48°
20
65°
51°
21
77°
47°
22
73°
49°
23
73°
49°
24
66°
48°
25
69°
49°
26
68°
47°
27
71°
47°
28
66°
42°
29
62°
37°
30
54°
34°
1
56°
32°
2
53°
31°
3
56°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sundance
Sundance's September 2026 forecast shows daily high temperatures ranging from 51° to 78°, with overnight lows between 31° and 55°. The average high for September is 65° 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 Sundance. See also: October | November | December.