S
M
T
W
T
F
S
30
77°
62°
31
80°
62°
1
81°
56°
2
77°
56°
3
76°
57°
4
76°
55°
5
77°
54°
6
77°
59°
7
80°
56°
8
76°
59°
9
80°
60°
10
80°
60°
11
77°
59°
12
79°
59°
13
80°
58°
14
80°
59°
15
79°
59°
16
79°
57°
17
77°
58°
18
75°
59°
19
77°
58°
20
78°
57°
21
77°
53°
22
76°
49°
23
73°
55°
24
68°
55°
25
Hist. Avg.
75°
55°
26
Hist. Avg.
75°
55°
27
Hist. Avg.
74°
54°
28
Hist. Avg.
74°
54°
29
Hist. Avg.
74°
54°
30
Hist. Avg.
73°
53°
1
Hist. Avg.
73°
53°
2
Hist. Avg.
72°
52°
3
Hist. Avg.
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Penbrook
Penbrook's September 2026 forecast shows daily high temperatures ranging from 68° to 81°, with overnight lows between 49° and 62°. The average high for September is 77° with an average low of 57°. 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 Penbrook. See also: October | November | December.