S
M
T
W
T
F
S
30
70°
60°
31
72°
64°
1
80°
64°
2
78°
60°
3
76°
56°
4
75°
56°
5
73°
57°
6
75°
57°
7
74°
56°
8
74°
58°
9
72°
54°
10
73°
53°
11
71°
49°
12
73°
53°
13
73°
55°
14
67°
52°
15
68°
54°
16
73°
53°
17
72°
50°
18
64°
48°
19
67°
52°
20
72°
54°
21
72°
54°
22
71°
53°
23
72°
52°
24
70°
51°
25
70°
50°
26
69°
51°
27
70°
52°
28
70°
50°
29
68°
48°
30
63°
47°
1
61°
49°
2
67°
50°
3
68°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Perry
Port Perry's September 2026 forecast shows daily high temperatures ranging from 61° to 80°, with overnight lows between 47° and 64°. The average high for September is 71° with an average low of 53°. 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 Port Perry. See also: October | November | December.
