S
M
T
W
T
F
S
30
83°
78°
31
81°
78°
1
80°
77°
2
79°
77°
3
77°
76°
4
78°
76°
5
77°
75°
6
76°
75°
7
76°
76°
8
78°
75°
9
79°
76°
10
80°
76°
11
81°
75°
12
79°
76°
13
78°
76°
14
80°
71°
15
77°
71°
16
76°
72°
17
77°
72°
18
76°
72°
19
76°
72°
20
75°
71°
21
76°
70°
22
75°
70°
23
75°
69°
24
76°
70°
25
74°
72°
26
76°
73°
27
76°
72°
28
77°
73°
29
78°
73°
30
78°
69°
1
77°
68°
2
76°
69°
3
73°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Portals Nous
Portals Nous's September 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 68° and 78°. The average high for September is 77° with an average low of 73°. 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 Portals Nous. See also: October | November | December.