S
M
T
W
T
F
S
30
100°
64°
31
99°
65°
1
99°
66°
2
101°
68°
3
101°
64°
4
98°
62°
5
96°
61°
6
95°
65°
7
93°
59°
8
92°
58°
9
92°
60°
10
93°
60°
11
93°
62°
12
96°
63°
13
98°
65°
14
98°
62°
15
97°
59°
16
92°
60°
17
90°
57°
18
89°
57°
19
88°
58°
20
90°
58°
21
93°
64°
22
92°
62°
23
89°
59°
24
86°
55°
25
87°
53°
26
86°
54°
27
84°
54°
28
86°
55°
29
85°
54°
30
85°
52°
1
Hist. Avg.
87°
61°
2
Hist. Avg.
87°
61°
3
Hist. Avg.
86°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sandy Valley
Sandy Valley's September 2026 forecast shows daily high temperatures ranging from 84° to 101°, with overnight lows between 52° and 68°. The average high for September is 93° with an average low of 60°. 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 Sandy Valley. See also: October | November | December.