S
M
T
W
T
F
S
30
89°
74°
31
90°
73°
1
91°
75°
2
91°
73°
3
90°
73°
4
84°
73°
5
88°
73°
6
88°
75°
7
90°
75°
8
90°
73°
9
91°
73°
10
88°
73°
11
84°
73°
12
86°
72°
13
88°
73°
14
90°
72°
15
89°
72°
16
89°
71°
17
88°
70°
18
86°
71°
19
86°
67°
20
86°
67°
21
87°
69°
22
86°
69°
23
85°
65°
24
87°
69°
25
87°
70°
26
84°
68°
27
87°
68°
28
86°
67°
29
87°
68°
30
86°
68°
1
86°
67°
2
85°
67°
3
85°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Summerdale
Summerdale's September 2026 forecast shows daily high temperatures ranging from 84° to 90°, with overnight lows between 65° and 73°. The average high for September is 87° with an average low of 69°. 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 Summerdale. See also: October | November | December.
