S
M
T
W
T
F
S
30
80°
55°
31
74°
64°
1
70°
60°
2
74°
59°
3
79°
65°
4
83°
66°
5
77°
61°
6
73°
56°
7
79°
54°
8
80°
54°
9
77°
58°
10
80°
66°
11
75°
55°
12
73°
52°
13
75°
60°
14
75°
51°
15
68°
47°
16
73°
51°
17
77°
62°
18
80°
63°
19
68°
54°
20
65°
55°
21
69°
56°
22
67°
50°
23
67°
49°
24
66°
48°
25
63°
50°
26
59°
54°
27
66°
59°
28
66°
57°
29
66°
56°
30
67°
54°
1
73°
55°
2
76°
65°
3
71°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westerly
Westerly's September 2026 forecast shows daily high temperatures ranging from 71° to 71°, with overnight lows between 46° and 46°. The average high for September is 71° with an average low of 46°. 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 Westerly. See also: October | November | December.
