S
M
T
W
T
F
S
30
78°
53°
31
79°
55°
1
64°
60°
2
69°
61°
3
77°
60°
4
80°
58°
5
73°
54°
6
71°
49°
7
77°
47°
8
75°
49°
9
71°
53°
10
81°
57°
11
72°
48°
12
75°
44°
13
70°
59°
14
69°
45°
15
70°
40°
16
77°
49°
17
74°
59°
18
74°
50°
19
61°
42°
20
53°
41°
21
62°
46°
22
65°
46°
23
66°
37°
24
68°
37°
25
74°
36°
26
64°
50°
27
62°
55°
28
59°
55°
29
62°
53°
30
67°
51°
1
72°
54°
2
80°
58°
3
67°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grafton
Grafton's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Grafton. See also: October | November | December.
