S
M
T
W
T
F
S
30
80°
51°
31
82°
52°
1
85°
54°
2
86°
54°
3
88°
55°
4
90°
54°
5
88°
51°
6
82°
49°
7
86°
53°
8
85°
46°
9
75°
50°
10
77°
51°
11
75°
52°
12
76°
51°
13
76°
52°
14
78°
42°
15
73°
39°
16
74°
41°
17
83°
48°
18
83°
46°
19
Hist. Avg.
80°
46°
20
Hist. Avg.
80°
46°
21
Hist. Avg.
79°
46°
22
Hist. Avg.
79°
45°
23
Hist. Avg.
78°
45°
24
Hist. Avg.
78°
45°
25
Hist. Avg.
78°
44°
26
Hist. Avg.
77°
44°
27
Hist. Avg.
77°
44°
28
Hist. Avg.
76°
43°
29
Hist. Avg.
76°
43°
30
Hist. Avg.
75°
42°
1
Hist. Avg.
75°
42°
2
Hist. Avg.
74°
42°
3
Hist. Avg.
74°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Grandview
Grandview's September 2026 forecast shows daily high temperatures ranging from 73° to 90°, with overnight lows between 39° and 55°. The average high for September is 81° with an average low of 50°. 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.
