S
M
T
W
T
F
S
30
49°
36°
31
49°
36°
1
50°
33°
2
47°
44°
3
52°
47°
4
52°
47°
5
54°
46°
6
56°
45°
7
54°
42°
8
51°
41°
9
52°
40°
10
49°
39°
11
52°
41°
12
51°
38°
13
50°
37°
14
48°
38°
15
48°
42°
16
48°
41°
17
45°
41°
18
47°
37°
19
44°
35°
20
43°
36°
21
43°
32°
22
42°
32°
23
41°
35°
24
41°
34°
25
42°
32°
26
41°
32°
27
40°
31°
28
39°
31°
29
40°
32°
30
38°
29°
1
38°
30°
2
37°
31°
3
38°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Safety
Port Safety's September 2026 forecast shows daily high temperatures ranging from 37° to 56°, with overnight lows between 29° and 47°. The average high for September is 46° with an average low of 37°. 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 Safety. See also: October | November | December.