S
M
T
W
T
F
S
30
74°
65°
31
71°
65°
1
75°
67°
2
76°
63°
3
75°
60°
4
73°
57°
5
76°
58°
6
76°
56°
7
74°
54°
8
75°
61°
9
71°
64°
10
68°
53°
11
71°
47°
12
78°
55°
13
69°
50°
14
64°
47°
15
67°
49°
16
69°
54°
17
70°
50°
18
65°
47°
19
66°
43°
20
67°
48°
21
58°
43°
22
65°
40°
23
70°
44°
24
69°
40°
25
68°
41°
26
72°
47°
27
71°
49°
28
67°
50°
29
71°
53°
30
69°
54°
1
66°
52°
2
64°
50°
3
65°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Parry Sound
Parry Sound's September 2026 forecast shows daily high temperatures ranging from 64° to 72°, with overnight lows between 40° and 54°. The average high for September is 68° 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 Parry Sound. See also: October | November | December.