S
M
T
W
T
F
S
30
67°
59°
31
65°
56°
1
68°
54°
2
65°
59°
3
69°
61°
4
65°
58°
5
65°
56°
6
73°
56°
7
66°
59°
8
62°
55°
9
62°
46°
10
65°
55°
11
65°
49°
12
67°
60°
13
66°
52°
14
71°
58°
15
67°
54°
16
63°
50°
17
65°
52°
18
66°
51°
19
68°
51°
20
65°
52°
21
66°
53°
22
66°
52°
23
66°
51°
24
64°
50°
25
60°
50°
26
59°
49°
27
64°
51°
28
62°
45°
29
58°
44°
30
58°
46°
1
59°
50°
2
62°
50°
3
61°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Penyffordd
Penyffordd's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 44° and 60°. The average high for September is 64° with an average low of 51°. 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 Penyffordd. See also: October | November | December.