S
M
T
W
T
F
S
30
88°
65°
31
85°
64°
1
86°
64°
2
87°
65°
3
86°
64°
4
86°
63°
5
84°
62°
6
85°
60°
7
84°
63°
8
85°
62°
9
85°
62°
10
84°
61°
11
84°
58°
12
83°
59°
13
85°
60°
14
84°
60°
15
84°
61°
16
81°
60°
17
84°
61°
18
84°
59°
19
81°
56°
20
80°
59°
21
77°
60°
22
78°
52°
23
76°
51°
24
75°
51°
25
75°
54°
26
78°
57°
27
74°
52°
28
73°
51°
29
73°
50°
30
74°
53°
1
73°
56°
2
73°
48°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Granite
Granite's September 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 46° and 65°. The average high for September is 81° with an average low of 58°. 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 Granite. See also: October | November | December.
