S
M
T
W
T
F
S
30
59°
53°
31
58°
55°
1
59°
56°
2
60°
55°
3
61°
53°
4
58°
52°
5
58°
52°
6
60°
54°
7
59°
56°
8
61°
55°
9
62°
52°
10
60°
54°
11
57°
55°
12
59°
54°
13
61°
53°
14
61°
50°
15
57°
50°
16
57°
55°
17
60°
54°
18
61°
54°
19
58°
55°
20
60°
54°
21
61°
55°
22
59°
55°
23
58°
53°
24
59°
54°
25
57°
54°
26
59°
53°
27
59°
55°
28
58°
51°
29
59°
52°
30
56°
51°
1
56°
52°
2
59°
48°
3
Hist. Avg.
58°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Pen-Y-Graig
Pen-Y-Graig's September 2026 forecast shows daily high temperatures ranging from 56° to 62°, with overnight lows between 48° and 56°. The average high for September is 59° with an average low of 53°. 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 Pen-Y-Graig. See also: October | November | December.
