S
M
T
W
T
F
S
30
71°
53°
31
70°
52°
1
71°
56°
2
72°
61°
3
71°
62°
4
79°
62°
5
79°
61°
6
78°
53°
7
77°
52°
8
71°
53°
9
70°
52°
10
69°
53°
11
69°
55°
12
68°
53°
13
73°
55°
14
73°
57°
15
72°
57°
16
67°
55°
17
69°
56°
18
71°
55°
19
72°
49°
20
69°
51°
21
68°
48°
22
71°
47°
23
65°
47°
24
64°
48°
25
64°
50°
26
65°
46°
27
64°
47°
28
63°
49°
29
61°
44°
30
62°
44°
1
61°
50°
2
67°
45°
3
66°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Boylston
West Boylston's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 44° and 62°. The average high for September is 69° with an average low of 52°. 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 West Boylston. See also: October | November | December.