S
M
T
W
T
F
S
30
62°
61°
31
64°
60°
1
67°
55°
2
62°
55°
3
62°
60°
4
66°
57°
5
63°
57°
6
64°
60°
7
66°
61°
8
67°
60°
9
68°
54°
10
66°
55°
11
64°
60°
12
66°
60°
13
67°
59°
14
67°
60°
15
66°
57°
16
63°
53°
17
62°
58°
18
65°
58°
19
65°
53°
20
60°
54°
21
61°
53°
22
60°
55°
23
62°
58°
24
63°
60°
25
66°
60°
26
65°
59°
27
63°
58°
28
62°
56°
29
64°
57°
30
63°
56°
1
59°
53°
2
59°
51°
3
61°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Portinfer
Portinfer's September 2026 forecast shows daily high temperatures ranging from 59° to 68°, with overnight lows between 51° and 61°. The average high for September is 64° with an average low of 57°. 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 Portinfer. See also: October | November | December.
