S
M
T
W
T
F
S
30
61°
58°
31
62°
57°
1
63°
55°
2
62°
57°
3
61°
55°
4
62°
54°
5
61°
54°
6
62°
55°
7
62°
55°
8
61°
56°
9
63°
55°
10
63°
56°
11
61°
56°
12
61°
54°
13
62°
55°
14
63°
56°
15
62°
55°
16
61°
55°
17
62°
54°
18
60°
53°
19
60°
53°
20
58°
54°
21
Hist. Avg.
56°
49°
22
Hist. Avg.
56°
49°
23
Hist. Avg.
56°
49°
24
Hist. Avg.
56°
49°
25
Hist. Avg.
56°
49°
26
Hist. Avg.
56°
49°
27
Hist. Avg.
55°
49°
28
Hist. Avg.
55°
49°
29
Hist. Avg.
55°
49°
30
Hist. Avg.
55°
49°
1
Hist. Avg.
55°
49°
2
Hist. Avg.
55°
48°
3
Hist. Avg.
55°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Port Ellen
Port Ellen's September 2026 forecast shows daily high temperatures ranging from 58° to 63°, with overnight lows between 53° and 58°. The average high for September is 62° with an average low of 55°. 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 Ellen. See also: October | November | December.