S
M
T
W
T
F
S
30
69°
63°
31
65°
57°
1
68°
59°
2
70°
56°
3
71°
61°
4
69°
64°
5
67°
56°
6
70°
58°
7
74°
60°
8
65°
56°
9
64°
55°
10
64°
58°
11
65°
58°
12
63°
55°
13
64°
56°
14
65°
56°
15
66°
58°
16
65°
58°
17
66°
56°
18
65°
55°
19
65°
56°
20
64°
55°
21
66°
56°
22
66°
57°
23
65°
56°
24
66°
56°
25
66°
55°
26
64°
54°
27
63°
53°
28
62°
51°
29
61°
52°
30
63°
54°
1
63°
54°
2
62°
52°
3
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Petten
Petten's September 2026 forecast shows daily high temperatures ranging from 61° to 74°, with overnight lows between 51° and 60°. The average high for September is 65° with an average low of 55°. 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 Petten. See also: October | November | December.