S
M
T
W
T
F
S
30
90°
66°
31
94°
72°
1
96°
71°
2
97°
73°
3
98°
74°
4
99°
72°
5
88°
67°
6
84°
63°
7
82°
63°
8
85°
62°
9
92°
69°
10
96°
65°
11
89°
61°
12
84°
63°
13
82°
61°
14
86°
60°
15
87°
60°
16
85°
59°
17
77°
62°
18
75°
61°
19
76°
59°
20
78°
60°
21
79°
61°
22
80°
62°
23
81°
61°
24
75°
60°
25
77°
61°
26
80°
61°
27
81°
59°
28
80°
53°
29
72°
50°
30
72°
51°
1
74°
55°
2
74°
57°
3
70°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Afton
Afton's September 2026 forecast shows daily high temperatures ranging from 70° to 99°, with overnight lows between 50° and 74°. The average high for September is 82° with an average low of 61°. 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 Afton. See also: October | November | December.