S
M
T
W
T
F
S
30
100°
73°
31
101°
74°
1
100°
74°
2
88°
84°
3
88°
82°
4
88°
82°
5
88°
84°
6
88°
84°
7
90°
84°
8
90°
84°
9
88°
82°
10
86°
79°
11
84°
67°
12
88°
68°
13
88°
71°
14
93°
73°
15
86°
66°
16
79°
66°
17
78°
62°
18
77°
61°
19
74°
55°
20
73°
55°
21
74°
58°
22
77°
59°
23
78°
57°
24
76°
56°
25
83°
64°
26
82°
63°
27
82°
63°
28
81°
62°
29
80°
61°
30
78°
58°
1
75°
54°
2
79°
60°
3
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grandview
Grandview's September 2026 forecast shows daily high temperatures ranging from 73° to 93°, with overnight lows between 54° and 73°. The average high for September is 80° with an average low of 62°. 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 Grandview. See also: October | November | December.
