S
M
T
W
T
F
S
30
73°
58°
31
72°
57°
1
72°
58°
2
72°
60°
3
73°
59°
4
73°
57°
5
72°
54°
6
70°
52°
7
66°
56°
8
68°
57°
9
72°
58°
10
72°
59°
11
73°
58°
12
71°
56°
13
72°
56°
14
72°
55°
15
69°
54°
16
67°
52°
17
69°
55°
18
73°
58°
19
73°
58°
20
72°
57°
21
71°
58°
22
67°
57°
23
66°
53°
24
68°
56°
25
68°
53°
26
67°
52°
27
67°
52°
28
66°
51°
29
67°
52°
30
66°
53°
1
66°
60°
2
71°
59°
3
74°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sunnydale
Sunnydale's September 2026 forecast shows daily high temperatures ranging from 66° to 74°, with overnight lows between 51° and 60°. The average high for September is 70° with an average low of 56°. 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 Sunnydale. See also: October | November | December.
