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