S
M
T
W
T
F
S
30
73°
53°
31
72°
51°
1
73°
49°
2
79°
54°
3
79°
51°
4
76°
53°
5
72°
50°
6
78°
47°
7
71°
46°
8
73°
49°
9
76°
52°
10
78°
55°
11
79°
44°
12
73°
48°
13
70°
52°
14
70°
46°
15
74°
42°
16
75°
42°
17
65°
40°
18
64°
40°
19
65°
44°
20
66°
46°
21
72°
41°
22
67°
41°
23
64°
38°
24
62°
37°
25
62°
38°
26
63°
39°
27
62°
39°
28
61°
42°
29
61°
39°
30
66°
45°
1
Hist. Avg.
66°
41°
2
Hist. Avg.
65°
40°
3
Hist. Avg.
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Granville
Granville's September 2026 forecast shows daily high temperatures ranging from 61° to 79°, with overnight lows between 37° and 55°. The average high for September is 70° with an average low of 45°. 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 Granville. See also: October | November | December.