S
M
T
W
T
F
S
30
83°
54°
31
77°
62°
1
70°
58°
2
77°
62°
3
77°
64°
4
83°
61°
5
77°
55°
6
74°
52°
7
79°
61°
8
77°
59°
9
78°
63°
10
80°
62°
11
79°
59°
12
79°
61°
13
77°
61°
14
75°
60°
15
74°
57°
16
74°
61°
17
78°
60°
18
71°
54°
19
76°
59°
20
75°
59°
21
73°
56°
22
72°
59°
23
73°
59°
24
74°
58°
25
70°
57°
26
73°
58°
27
75°
59°
28
75°
56°
29
67°
52°
30
69°
55°
1
68°
53°
2
65°
54°
3
64°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Fall River
Fall River's September 2026 forecast shows daily high temperatures ranging from 64° to 83°, with overnight lows between 52° and 64°. The average high for September is 74° 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 Fall River. See also: October | November | December.
