S
M
T
W
T
F
S
30
93°
68°
31
90°
65°
1
89°
58°
2
88°
55°
3
85°
56°
4
85°
58°
5
94°
56°
6
79°
66°
7
88°
72°
8
102°
72°
9
105°
75°
10
100°
75°
11
95°
71°
12
92°
67°
13
90°
65°
14
87°
62°
15
82°
62°
16
81°
62°
17
83°
62°
18
83°
57°
19
87°
58°
20
85°
56°
21
79°
64°
22
87°
65°
23
95°
60°
24
92°
63°
25
94°
60°
26
93°
61°
27
90°
58°
28
87°
59°
29
93°
63°
30
92°
62°
1
93°
62°
2
93°
63°
3
96°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in French Valley
French Valley's September 2026 forecast shows daily high temperatures ranging from 87° to 96°, with overnight lows between 58° and 63°. The average high for September is 93° with an average low of 61°. 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 French Valley. See also: October | November | December.
