S
M
T
W
T
F
S
30
91°
62°
31
92°
58°
1
92°
66°
2
93°
60°
3
94°
63°
4
96°
61°
5
91°
64°
6
89°
65°
7
95°
66°
8
84°
58°
9
81°
53°
10
86°
62°
11
92°
53°
12
81°
58°
13
77°
55°
14
71°
44°
15
72°
50°
16
69°
50°
17
77°
53°
18
71°
52°
19
67°
47°
20
76°
45°
21
81°
54°
22
80°
54°
23
80°
53°
24
79°
52°
25
71°
52°
26
74°
51°
27
78°
51°
28
77°
50°
29
73°
40°
30
63°
38°
1
62°
38°
2
61°
35°
3
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Stapleton
Stapleton's September 2026 forecast shows daily high temperatures ranging from 61° to 92°, with overnight lows between 35° and 62°. The average high for September is 75° 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 Stapleton. See also: October | November | December.
