S
M
T
W
T
F
S
30
76°
55°
31
70°
55°
1
73°
51°
2
70°
49°
3
68°
57°
4
71°
60°
5
60°
54°
6
60°
51°
7
66°
51°
8
72°
48°
9
68°
56°
10
74°
55°
11
72°
50°
12
71°
50°
13
72°
49°
14
71°
54°
15
72°
50°
16
68°
48°
17
66°
47°
18
64°
49°
19
68°
48°
20
67°
51°
21
63°
51°
22
63°
52°
23
65°
51°
24
68°
50°
25
64°
51°
26
66°
49°
27
60°
48°
28
61°
50°
29
67°
50°
30
67°
49°
1
66°
50°
2
66°
49°
3
64°
50°
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 60° to 74°, with overnight lows between 47° and 56°. The average high for September is 67° with an average low of 50°. 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.
