S
M
T
W
T
F
S
30
65°
54°
31
65°
56°
1
68°
56°
2
70°
55°
3
73°
56°
4
74°
56°
5
71°
57°
6
72°
56°
7
71°
55°
8
70°
54°
9
70°
54°
10
71°
53°
11
71°
54°
12
70°
54°
13
71°
53°
14
71°
54°
15
70°
54°
16
70°
53°
17
69°
53°
18
69°
52°
19
68°
51°
20
67°
51°
21
68°
45°
22
68°
39°
23
61°
40°
24
62°
45°
25
65°
49°
26
66°
47°
27
65°
48°
28
66°
48°
29
66°
50°
30
67°
47°
1
65°
39°
2
63°
41°
3
62°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sudbury
Sudbury's September 2026 forecast shows daily high temperatures ranging from 61° to 74°, with overnight lows between 39° and 57°. The average high for September is 68° with an average low of 51°. 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 Sudbury. See also: October | November | December.
