S
M
T
W
T
F
S
30
77°
53°
31
76°
52°
1
76°
53°
2
77°
54°
3
75°
56°
4
75°
53°
5
77°
53°
6
76°
52°
7
75°
50°
8
74°
51°
9
74°
51°
10
75°
52°
11
73°
49°
12
73°
49°
13
74°
50°
14
76°
54°
15
75°
54°
16
78°
53°
17
78°
48°
18
71°
46°
19
73°
50°
20
75°
48°
21
70°
46°
22
70°
51°
23
74°
52°
24
75°
53°
25
76°
50°
26
75°
43°
27
71°
45°
28
67°
44°
29
66°
43°
30
66°
42°
1
65°
43°
2
Hist. Avg.
69°
47°
3
Hist. Avg.
69°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sunbury
Sunbury's September 2026 forecast shows daily high temperatures ranging from 65° to 78°, with overnight lows between 42° and 56°. The average high for September is 74° with an average low of 50°. 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 Sunbury. See also: October | November | December.
