S
M
T
W
T
F
S
30
83°
62°
31
76°
55°
1
76°
55°
2
77°
56°
3
76°
60°
4
77°
58°
5
77°
56°
6
79°
56°
7
81°
57°
8
81°
57°
9
82°
55°
10
82°
60°
11
83°
59°
12
81°
60°
13
82°
59°
14
80°
60°
15
79°
59°
16
73°
55°
17
74°
52°
18
73°
50°
19
79°
57°
20
79°
54°
21
73°
50°
22
71°
48°
23
76°
51°
24
79°
55°
25
79°
55°
26
78°
54°
27
77°
55°
28
76°
54°
29
75°
54°
30
70°
48°
1
71°
49°
2
68°
46°
3
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sellersville Heights
Sellersville Heights's September 2026 forecast shows daily high temperatures ranging from 66° to 83°, with overnight lows between 39° and 62°. The average high for September is 77° with an average low of 55°. 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 Sellersville Heights. See also: October | November | December.