S
M
T
W
T
F
S
30
75°
57°
31
77°
58°
1
78°
58°
2
78°
57°
3
77°
57°
4
78°
60°
5
78°
59°
6
77°
61°
7
78°
61°
8
78°
58°
9
76°
58°
10
72°
60°
11
78°
61°
12
73°
58°
13
72°
58°
14
70°
54°
15
71°
54°
16
77°
55°
17
72°
56°
18
Hist. Avg.
75°
57°
19
Hist. Avg.
75°
57°
20
Hist. Avg.
75°
57°
21
Hist. Avg.
75°
57°
22
Hist. Avg.
75°
57°
23
Hist. Avg.
75°
57°
24
Hist. Avg.
74°
57°
25
Hist. Avg.
74°
57°
26
Hist. Avg.
74°
57°
27
Hist. Avg.
74°
57°
28
Hist. Avg.
74°
57°
29
Hist. Avg.
74°
56°
30
Hist. Avg.
74°
56°
1
Hist. Avg.
74°
56°
2
Hist. Avg.
74°
56°
3
Hist. Avg.
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in South Shore
South Shore's September 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 54° and 61°. The average high for September is 76° 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 South Shore. See also: October | November | December.