S
M
T
W
T
F
S
30
88°
66°
31
86°
59°
1
84°
58°
2
81°
60°
3
81°
59°
4
82°
59°
5
81°
60°
6
80°
58°
7
79°
58°
8
80°
61°
9
80°
58°
10
78°
57°
11
79°
59°
12
81°
58°
13
80°
57°
14
79°
56°
15
77°
58°
16
79°
54°
17
78°
55°
18
78°
55°
19
76°
60°
20
77°
59°
21
80°
58°
22
Hist. Avg.
75°
51°
23
Hist. Avg.
74°
50°
24
Hist. Avg.
74°
50°
25
Hist. Avg.
73°
50°
26
Hist. Avg.
73°
49°
27
Hist. Avg.
72°
49°
28
Hist. Avg.
72°
48°
29
Hist. Avg.
72°
48°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
71°
47°
2
Hist. Avg.
70°
47°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Penn Square
Penn Square's September 2026 forecast shows daily high temperatures ranging from 76° to 88°, with overnight lows between 54° and 66°. The average high for September is 80° with an average low of 58°. 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 Penn Square. See also: October | November | December.
