S
M
T
W
T
F
S
30
63°
52°
31
N/A
1
62°
46°
2
64°
54°
3
65°
51°
4
59°
46°
5
61°
48°
6
61°
48°
7
61°
48°
8
59°
49°
9
59°
48°
10
60°
45°
11
60°
46°
12
59°
46°
13
60°
48°
14
61°
50°
15
61°
50°
16
60°
49°
17
59°
50°
18
60°
49°
19
58°
47°
20
58°
48°
21
57°
50°
22
60°
48°
23
57°
47°
24
55°
48°
25
57°
49°
26
58°
48°
27
59°
49°
28
59°
48°
29
58°
47°
30
59°
48°
1
58°
48°
2
58°
47°
3
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Portclair
Portclair's September 2026 forecast shows daily high temperatures ranging from 55° to 65°, with overnight lows between 45° and 54°. The average high for September is 59° 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 Portclair. See also: October | November | December.
