S
M
T
W
T
F
S
30
55°
48°
31
54°
51°
1
58°
53°
2
61°
54°
3
60°
55°
4
57°
51°
5
58°
50°
6
59°
51°
7
56°
49°
8
58°
48°
9
56°
47°
10
57°
49°
11
55°
49°
12
55°
47°
13
56°
48°
14
54°
44°
15
52°
46°
16
54°
45°
17
53°
42°
18
51°
42°
19
51°
41°
20
49°
41°
21
50°
42°
22
50°
43°
23
52°
41°
24
49°
40°
25
48°
40°
26
49°
40°
27
48°
39°
28
48°
40°
29
47°
42°
30
47°
42°
1
48°
41°
2
47°
42°
3
47°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Port Moller
Port Moller's September 2026 forecast shows daily high temperatures ranging from 47° to 61°, with overnight lows between 39° and 55°. The average high for September is 53° with an average low of 45°. 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 Moller. See also: October | November | December.