S
M
T
W
T
F
S
30
70°
61°
31
68°
59°
1
66°
55°
2
70°
54°
3
70°
61°
4
66°
61°
5
N/A
6
69°
52°
7
80°
61°
8
66°
54°
9
64°
49°
10
65°
51°
11
63°
53°
12
64°
50°
13
65°
49°
14
64°
49°
15
65°
52°
16
67°
50°
17
66°
51°
18
64°
48°
19
66°
51°
20
64°
50°
21
64°
52°
22
66°
52°
23
66°
52°
24
67°
52°
25
66°
50°
26
63°
48°
27
61°
46°
28
59°
44°
29
61°
44°
30
59°
50°
1
61°
48°
2
61°
45°
3
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Apen
Apen's September 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 44° and 61°. The average high for September is 65° with an average low of 50°. 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 Apen. See also: October | November | December.
