S
M
T
W
T
F
S
30
77°
62°
31
85°
65°
1
86°
65°
2
83°
64°
3
77°
65°
4
77°
65°
5
75°
59°
6
76°
56°
7
76°
49°
8
72°
58°
9
83°
57°
10
77°
53°
11
80°
54°
12
79°
52°
13
69°
45°
14
69°
61°
15
75°
51°
16
69°
60°
17
72°
53°
18
74°
63°
19
75°
59°
20
70°
57°
21
69°
55°
22
71°
52°
23
69°
52°
24
70°
55°
25
71°
56°
26
73°
53°
27
73°
53°
28
71°
52°
29
69°
53°
30
69°
52°
1
71°
50°
2
70°
50°
3
68°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Portage
Portage's September 2026 forecast shows daily high temperatures ranging from 68° to 75°, with overnight lows between 49° and 63°. The average high for September is 71° with an average low of 54°. 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 Portage. See also: October | November | December.
