S
M
T
W
T
F
S
26
88°
76°
27
89°
77°
28
89°
77°
29
90°
76°
30
90°
77°
31
91°
77°
1
89°
76°
2
89°
75°
3
89°
74°
4
90°
75°
5
92°
75°
6
93°
76°
7
94°
74°
8
93°
76°
9
94°
74°
10
90°
75°
11
94°
75°
12
92°
74°
13
90°
75°
14
90°
75°
15
93°
76°
16
93°
75°
17
94°
75°
18
93°
76°
19
92°
75°
20
93°
76°
21
90°
75°
22
91°
75°
23
93°
74°
24
93°
73°
25
92°
74°
26
90°
73°
27
89°
71°
28
91°
72°
29
90°
72°
30
90°
74°
31
92°
74°
1
92°
72°
2
90°
73°
3
91°
73°
4
92°
72°
5
89°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Gabriel
St. Gabriel's August 2026 forecast shows daily high temperatures ranging from 88° to 94°, with overnight lows between 71° and 77°. The average high for August is 91° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in St. Gabriel. See also: September | October | November.