S
M
T
W
T
F
S
30
66°
53°
31
66°
50°
1
67°
50°
2
65°
53°
3
65°
48°
4
68°
48°
5
65°
50°
6
67°
49°
7
68°
50°
8
69°
54°
9
69°
51°
10
64°
53°
11
67°
53°
12
65°
52°
13
68°
52°
14
67°
51°
15
68°
51°
16
66°
50°
17
63°
51°
18
62°
49°
19
65°
46°
20
61°
46°
21
62°
45°
22
61°
46°
23
62°
48°
24
63°
50°
25
60°
52°
26
64°
51°
27
64°
50°
28
63°
47°
29
59°
46°
30
59°
45°
1
60°
44°
2
59°
44°
3
60°
46°
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 59° to 69°, with overnight lows between 44° and 54°. The average high for September is 64° with an average low of 49°. 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.