S
M
T
W
T
F
S
30
72°
58°
31
74°
54°
1
75°
52°
2
68°
51°
3
67°
53°
4
71°
61°
5
73°
57°
6
75°
51°
7
68°
52°
8
67°
58°
9
69°
57°
10
71°
58°
11
72°
57°
12
67°
58°
13
68°
54°
14
65°
49°
15
63°
48°
16
63°
47°
17
64°
55°
18
67°
55°
19
69°
56°
20
72°
55°
21
69°
50°
22
67°
47°
23
61°
46°
24
62°
45°
25
62°
43°
26
59°
44°
27
Hist. Avg.
60°
48°
28
Hist. Avg.
60°
48°
29
Hist. Avg.
60°
47°
30
Hist. Avg.
59°
47°
1
Hist. Avg.
59°
47°
2
Hist. Avg.
59°
47°
3
Hist. Avg.
58°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Port Hope
Port Hope's September 2026 forecast shows daily high temperatures ranging from 59° to 75°, with overnight lows between 43° and 61°. The average high for September is 68° 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 Hope. See also: October | November | December.