S
M
T
W
T
F
S
30
94°
70°
31
89°
66°
1
88°
59°
2
86°
59°
3
85°
59°
4
85°
59°
5
92°
59°
6
74°
66°
7
88°
71°
8
99°
72°
9
109°
77°
10
104°
78°
11
98°
73°
12
93°
69°
13
89°
67°
14
88°
64°
15
86°
64°
16
83°
64°
17
84°
64°
18
83°
60°
19
86°
60°
20
87°
61°
21
81°
60°
22
88°
57°
23
100°
62°
24
99°
63°
25
97°
62°
26
97°
62°
27
94°
61°
28
91°
59°
29
90°
60°
30
88°
60°
1
90°
59°
2
85°
57°
3
85°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Temescal Valley
Temescal Valley's September 2026 forecast shows daily high temperatures ranging from 81° to 100°, with overnight lows between 57° and 63°. The average high for September is 91° 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 Temescal Valley. See also: October | November | December.
