S
M
T
W
T
F
S
30
92°
66°
31
92°
66°
1
93°
65°
2
94°
65°
3
91°
64°
4
88°
65°
5
88°
63°
6
89°
63°
7
91°
65°
8
93°
66°
9
93°
66°
10
92°
65°
11
92°
65°
12
90°
64°
13
91°
65°
14
86°
63°
15
87°
60°
16
87°
62°
17
91°
63°
18
93°
61°
19
92°
60°
20
92°
60°
21
93°
61°
22
90°
59°
23
88°
58°
24
90°
61°
25
91°
65°
26
92°
65°
27
93°
64°
28
94°
64°
29
93°
61°
30
90°
57°
1
87°
57°
2
83°
56°
3
82°
53°
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 82° to 94°, with overnight lows between 53° and 66°. The average high for September is 90° with an average low of 62°. 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.
