S
M
T
W
T
F
S
30
88°
69°
31
94°
71°
1
95°
73°
2
94°
74°
3
96°
75°
4
96°
75°
5
94°
72°
6
83°
68°
7
82°
60°
8
88°
69°
9
81°
62°
10
81°
56°
11
82°
63°
12
87°
63°
13
85°
63°
14
77°
62°
15
77°
58°
16
79°
56°
17
78°
61°
18
76°
57°
19
75°
54°
20
78°
53°
21
78°
59°
22
74°
58°
23
75°
58°
24
80°
57°
25
81°
59°
26
81°
59°
27
80°
58°
28
81°
59°
29
81°
60°
30
79°
58°
1
78°
52°
2
69°
47°
3
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Spring Bay
Spring Bay's September 2026 forecast shows daily high temperatures ranging from 66° to 88°, with overnight lows between 43° and 69°. The average high for September is 79° with an average low of 58°. 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 Spring Bay. See also: October | November | December.