S
M
T
W
T
F
S
30
91°
77°
31
92°
76°
1
92°
76°
2
91°
75°
3
92°
74°
4
92°
75°
5
90°
75°
6
88°
74°
7
87°
74°
8
89°
73°
9
89°
74°
10
91°
71°
11
90°
72°
12
91°
71°
13
90°
70°
14
86°
69°
15
87°
70°
16
87°
70°
17
89°
72°
18
90°
72°
19
88°
72°
20
Hist. Avg.
88°
71°
21
Hist. Avg.
88°
70°
22
Hist. Avg.
88°
70°
23
Hist. Avg.
88°
70°
24
Hist. Avg.
87°
70°
25
Hist. Avg.
87°
69°
26
Hist. Avg.
87°
69°
27
Hist. Avg.
87°
69°
28
Hist. Avg.
86°
68°
29
Hist. Avg.
86°
68°
30
Hist. Avg.
86°
68°
1
Hist. Avg.
86°
68°
2
Hist. Avg.
85°
67°
3
Hist. Avg.
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Avalon
Avalon's September 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 69° and 77°. The average high for September is 90° with an average low of 73°. 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 Avalon. See also: October | November | December.