S
M
T
W
T
F
S
30
77°
58°
31
75°
60°
1
65°
58°
2
71°
58°
3
78°
59°
4
78°
63°
5
70°
58°
6
68°
54°
7
75°
53°
8
75°
58°
9
75°
58°
10
81°
60°
11
73°
51°
12
75°
61°
13
73°
60°
14
75°
49°
15
68°
56°
16
73°
59°
17
76°
59°
18
71°
56°
19
68°
52°
20
64°
51°
21
66°
50°
22
68°
48°
23
68°
53°
24
70°
50°
25
61°
45°
26
62°
48°
27
61°
53°
28
68°
51°
29
61°
48°
30
61°
50°
1
62°
52°
2
62°
49°
3
64°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Worcester
Worcester's September 2026 forecast shows daily high temperatures ranging from 61° to 76°, with overnight lows between 45° and 61°. The average high for September is 67° 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 Worcester. See also: October | November | December.
