S
M
T
W
T
F
S
30
92°
71°
31
94°
72°
1
95°
72°
2
95°
71°
3
94°
72°
4
95°
72°
5
94°
71°
6
93°
72°
7
93°
68°
8
92°
68°
9
91°
66°
10
92°
67°
11
94°
69°
12
93°
68°
13
93°
69°
14
94°
68°
15
94°
67°
16
92°
67°
17
84°
66°
18
88°
67°
19
87°
66°
20
86°
66°
21
91°
65°
22
88°
63°
23
89°
65°
24
85°
65°
25
87°
64°
26
87°
64°
27
88°
63°
28
88°
63°
29
81°
60°
30
80°
57°
1
79°
57°
2
80°
58°
3
80°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in San Augustine
San Augustine's September 2026 forecast shows daily high temperatures ranging from 79° to 95°, with overnight lows between 57° and 72°. The average high for September is 89° with an average low of 66°. 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 Augustine. See also: October | November | December.
