S
M
T
W
T
F
S
30
101°
82°
31
94°
82°
1
91°
81°
2
91°
81°
3
90°
80°
4
90°
80°
5
91°
80°
6
93°
80°
7
91°
79°
8
90°
80°
9
87°
72°
10
88°
72°
11
85°
73°
12
81°
67°
13
79°
67°
14
80°
69°
15
80°
69°
16
79°
71°
17
80°
72°
18
80°
70°
19
79°
69°
20
79°
70°
21
78°
69°
22
80°
70°
23
79°
67°
24
78°
69°
25
79°
68°
26
78°
66°
27
74°
65°
28
74°
64°
29
75°
66°
30
76°
65°
1
74°
63°
2
72°
64°
3
72°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in San Ferdinando
San Ferdinando's September 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 63° and 73°. The average high for September is 79° with an average low of 68°. 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 San Ferdinando. See also: October | November | December.