S
M
T
W
T
F
S
30
102°
79°
31
102°
76°
1
100°
75°
2
103°
77°
3
97°
75°
4
100°
77°
5
101°
74°
6
102°
75°
7
102°
75°
8
102°
79°
9
102°
78°
10
102°
73°
11
98°
77°
12
106°
78°
13
102°
78°
14
100°
76°
15
99°
77°
16
99°
74°
17
99°
72°
18
94°
69°
19
89°
66°
20
86°
64°
21
89°
63°
22
88°
67°
23
87°
62°
24
85°
61°
25
90°
67°
26
90°
66°
27
88°
67°
28
88°
66°
29
89°
66°
30
89°
65°
1
88°
65°
2
88°
64°
3
87°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Granbury
Granbury's September 2026 forecast shows daily high temperatures ranging from 85° to 106°, with overnight lows between 61° and 78°. The average high for September is 92° with an average low of 68°. 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 Granbury. See also: October | November | December.
