S
M
T
W
T
F
S
30
84°
62°
31
83°
62°
1
84°
59°
2
76°
55°
3
75°
54°
4
75°
54°
5
76°
55°
6
80°
58°
7
82°
61°
8
82°
60°
9
79°
60°
10
82°
61°
11
83°
60°
12
82°
60°
13
83°
61°
14
82°
52°
15
74°
51°
16
72°
52°
17
74°
51°
18
72°
49°
19
73°
50°
20
71°
49°
21
76°
50°
22
77°
55°
23
78°
47°
24
78°
47°
25
71°
46°
26
70°
47°
27
72°
53°
28
73°
53°
29
75°
44°
30
69°
45°
1
67°
51°
2
69°
51°
3
71°
50°
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 67° to 84°, with overnight lows between 44° and 62°. The average high for September is 76° with an average low of 54°. 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.