S
M
T
W
T
F
S
30
76°
57°
31
77°
51°
1
76°
49°
2
70°
50°
3
70°
49°
4
71°
50°
5
70°
49°
6
69°
50°
7
70°
50°
8
72°
48°
9
69°
49°
10
72°
53°
11
72°
54°
12
68°
53°
13
71°
47°
14
72°
51°
15
69°
50°
16
68°
50°
17
65°
49°
18
64°
48°
19
64°
49°
20
63°
47°
21
Hist. Avg.
64°
47°
22
Hist. Avg.
63°
46°
23
Hist. Avg.
63°
46°
24
Hist. Avg.
63°
46°
25
Hist. Avg.
62°
46°
26
Hist. Avg.
62°
45°
27
Hist. Avg.
62°
45°
28
Hist. Avg.
61°
45°
29
Hist. Avg.
61°
44°
30
Hist. Avg.
61°
44°
1
Hist. Avg.
60°
44°
2
Hist. Avg.
60°
43°
3
Hist. Avg.
59°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Fall River
Fall River's September 2026 forecast shows daily high temperatures ranging from 63° to 77°, with overnight lows between 47° and 57°. The average high for September is 70° 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.
