S
M
T
W
T
F
S
30
67°
49°
31
67°
49°
1
70°
54°
2
75°
57°
3
69°
60°
4
73°
59°
5
80°
56°
6
75°
51°
7
68°
47°
8
68°
48°
9
72°
47°
10
73°
52°
11
73°
49°
12
65°
52°
13
72°
55°
14
75°
54°
15
75°
53°
16
68°
54°
17
65°
53°
18
69°
52°
19
69°
49°
20
64°
51°
21
71°
42°
22
65°
41°
23
62°
41°
24
62°
42°
25
64°
42°
26
61°
41°
27
60°
42°
28
61°
43°
29
58°
39°
30
59°
42°
1
59°
41°
2
65°
38°
3
57°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Lewis
Port Lewis's September 2026 forecast shows daily high temperatures ranging from 57° to 80°, with overnight lows between 38° and 60°. The average high for September is 67° with an average low of 48°. 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 Lewis. See also: October | November | December.
