S
M
T
W
T
F
S
30
81°
57°
31
81°
65°
1
90°
69°
2
83°
68°
3
86°
66°
4
83°
68°
5
80°
60°
6
73°
57°
7
77°
52°
8
81°
51°
9
86°
59°
10
82°
62°
11
81°
57°
12
71°
67°
13
83°
60°
14
76°
54°
15
77°
59°
16
83°
63°
17
74°
54°
18
70°
50°
19
70°
49°
20
72°
51°
21
68°
49°
22
68°
51°
23
71°
48°
24
73°
53°
25
65°
45°
26
68°
48°
27
74°
52°
28
74°
49°
29
67°
43°
30
72°
52°
1
71°
48°
2
68°
46°
3
71°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Bellefonte
Bellefonte's September 2026 forecast shows daily high temperatures ranging from 65° to 83°, with overnight lows between 43° and 67°. The average high for September is 73° 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 Bellefonte. See also: October | November | December.