S
M
T
W
T
F
S
30
69°
52°
31
71°
59°
1
73°
60°
2
69°
62°
3
75°
62°
4
79°
56°
5
80°
56°
6
70°
52°
7
67°
50°
8
70°
57°
9
73°
56°
10
75°
57°
11
72°
53°
12
70°
58°
13
72°
57°
14
76°
54°
15
69°
56°
16
65°
55°
17
64°
56°
18
66°
50°
19
71°
51°
20
64°
53°
21
69°
45°
22
63°
48°
23
63°
45°
24
66°
50°
25
70°
49°
26
68°
49°
27
64°
53°
28
64°
48°
29
68°
43°
30
60°
51°
1
64°
44°
2
69°
43°
3
59°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Whitby
Port Whitby's September 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 43° and 62°. The average high for September is 69° 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 Port Whitby. See also: October | November | December.
