S
M
T
W
T
F
S
30
81°
67°
31
86°
67°
1
86°
69°
2
85°
68°
3
78°
70°
4
82°
66°
5
77°
61°
6
80°
54°
7
77°
59°
8
79°
68°
9
79°
57°
10
74°
54°
11
78°
59°
12
76°
56°
13
69°
53°
14
70°
52°
15
68°
54°
16
72°
55°
17
74°
54°
18
72°
52°
19
73°
48°
20
74°
54°
21
69°
53°
22
68°
53°
23
70°
52°
24
74°
53°
25
74°
53°
26
73°
52°
27
73°
53°
28
75°
53°
29
74°
52°
30
73°
53°
1
70°
47°
2
63°
42°
3
60°
39°
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 80°, with overnight lows between 39° and 68°. The average high for September is 73° with an average low of 53°. 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.
