S
M
T
W
T
F
S
30
72°
55°
31
68°
55°
1
68°
55°
2
68°
61°
3
70°
64°
4
68°
57°
5
66°
52°
6
77°
57°
7
66°
59°
8
63°
55°
9
63°
52°
10
N/A
11
68°
50°
12
67°
62°
13
69°
60°
14
70°
58°
15
66°
51°
16
64°
51°
17
65°
50°
18
64°
55°
19
64°
53°
20
63°
55°
21
64°
54°
22
64°
55°
23
65°
56°
24
64°
52°
25
61°
52°
26
60°
51°
27
63°
53°
28
62°
47°
29
58°
46°
30
57°
46°
1
58°
52°
2
61°
51°
3
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Pentyrch
Pentyrch's September 2026 forecast shows daily high temperatures ranging from 57° to 70°, with overnight lows between 46° and 62°. The average high for September is 63° 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 Pentyrch. See also: October | November | December.