S
M
T
W
T
F
S
30
82°
62°
31
77°
56°
1
75°
57°
2
75°
56°
3
74°
55°
4
74°
59°
5
75°
62°
6
76°
63°
7
80°
61°
8
81°
60°
9
80°
59°
10
75°
61°
11
81°
61°
12
82°
60°
13
79°
61°
14
79°
59°
15
81°
51°
16
79°
50°
17
71°
49°
18
71°
53°
19
73°
54°
20
73°
57°
21
76°
57°
22
73°
56°
23
76°
57°
24
77°
55°
25
74°
56°
26
77°
56°
27
77°
49°
28
76°
45°
29
74°
46°
30
64°
50°
1
65°
45°
2
67°
49°
3
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Woonsocket
Woonsocket's September 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 45° and 63°. The average high for September is 75° with an average low of 55°. 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 Woonsocket. See also: October | November | December.