S
M
T
W
T
F
S
30
95°
77°
31
95°
77°
1
96°
78°
2
96°
77°
3
96°
72°
4
95°
72°
5
91°
75°
6
92°
77°
7
96°
77°
8
96°
76°
9
95°
77°
10
96°
76°
11
95°
76°
12
95°
75°
13
94°
76°
14
95°
75°
15
95°
73°
16
91°
72°
17
91°
75°
18
94°
74°
19
91°
75°
20
90°
75°
21
92°
74°
22
93°
74°
23
89°
73°
24
89°
72°
25
90°
73°
26
91°
73°
27
93°
72°
28
93°
73°
29
91°
73°
30
88°
72°
1
92°
72°
2
88°
71°
3
89°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in San Benito
San Benito's September 2026 forecast shows daily high temperatures ranging from 88° to 96°, with overnight lows between 69° and 78°. The average high for September is 93° with an average low of 74°. 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 Benito. See also: October | November | December.