S
M
T
W
T
F
S
30
93°
63°
31
94°
62°
1
94°
59°
2
95°
59°
3
93°
60°
4
92°
57°
5
92°
57°
6
91°
56°
7
91°
58°
8
92°
59°
9
93°
60°
10
92°
59°
11
93°
61°
12
90°
57°
13
89°
61°
14
93°
64°
15
Hist. Avg.
90°
59°
16
Hist. Avg.
90°
59°
17
Hist. Avg.
89°
59°
18
Hist. Avg.
89°
58°
19
Hist. Avg.
89°
58°
20
Hist. Avg.
89°
58°
21
Hist. Avg.
89°
58°
22
Hist. Avg.
89°
58°
23
Hist. Avg.
88°
58°
24
Hist. Avg.
88°
57°
25
Hist. Avg.
88°
57°
26
Hist. Avg.
88°
57°
27
Hist. Avg.
88°
57°
28
Hist. Avg.
87°
57°
29
Hist. Avg.
87°
56°
30
Hist. Avg.
87°
56°
1
Hist. Avg.
87°
56°
2
Hist. Avg.
86°
56°
3
Hist. Avg.
86°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Temescal Valley
Temescal Valley's September 2026 forecast shows daily high temperatures ranging from 89° to 95°, with overnight lows between 56° and 64°. The average high for September is 92° 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.