S
M
T
W
T
F
S
30
78°
51°
31
77°
49°
1
78°
53°
2
78°
56°
3
79°
59°
4
86°
59°
5
87°
58°
6
86°
50°
7
84°
49°
8
78°
50°
9
77°
49°
10
76°
51°
11
75°
52°
12
75°
50°
13
78°
50°
14
79°
53°
15
78°
52°
16
74°
53°
17
77°
52°
18
78°
51°
19
79°
45°
20
77°
48°
21
75°
46°
22
79°
43°
23
72°
43°
24
71°
44°
25
70°
45°
26
70°
42°
27
71°
42°
28
70°
45°
29
68°
40°
30
69°
40°
1
68°
44°
2
74°
42°
3
73°
44°
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 68° to 87°, with overnight lows between 40° and 59°. The average high for September is 76° with an average low of 49°. 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.
