S
M
T
W
T
F
S
30
84°
65°
31
84°
64°
1
83°
64°
2
84°
63°
3
85°
64°
4
84°
64°
5
84°
65°
6
85°
66°
7
85°
64°
8
83°
65°
9
82°
64°
10
82°
64°
11
81°
65°
12
82°
66°
13
84°
64°
14
86°
65°
15
85°
64°
16
83°
63°
17
84°
62°
18
83°
65°
19
82°
64°
20
Hist. Avg.
87°
62°
21
Hist. Avg.
86°
61°
22
Hist. Avg.
86°
61°
23
Hist. Avg.
86°
61°
24
Hist. Avg.
86°
61°
25
Hist. Avg.
85°
61°
26
Hist. Avg.
85°
60°
27
Hist. Avg.
85°
60°
28
Hist. Avg.
85°
60°
29
Hist. Avg.
84°
60°
30
Hist. Avg.
84°
60°
1
Hist. Avg.
84°
59°
2
Hist. Avg.
84°
59°
3
Hist. Avg.
83°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Spring Valley
Spring Valley's September 2026 forecast shows daily high temperatures ranging from 81° to 86°, with overnight lows between 62° and 66°. The average high for September is 84° with an average low of 64°. 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 Spring Valley. See also: October | November | December.
