S
M
T
W
T
F
S
26
97°
71°
27
98°
73°
28
98°
73°
29
97°
76°
30
99°
73°
31
99°
72°
1
92°
77°
2
99°
67°
3
101°
68°
4
99°
74°
5
99°
75°
6
100°
74°
7
101°
72°
8
99°
70°
9
100°
73°
10
99°
72°
11
99°
76°
12
101°
76°
13
101°
74°
14
101°
76°
15
100°
76°
16
102°
68°
17
104°
71°
18
102°
70°
19
103°
77°
20
104°
73°
21
105°
74°
22
106°
73°
23
107°
77°
24
107°
74°
25
107°
77°
26
107°
78°
27
102°
74°
28
99°
75°
29
101°
75°
30
100°
74°
31
99°
73°
1
99°
73°
2
98°
74°
3
99°
72°
4
100°
73°
5
93°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marble Falls
Marble Falls's August 2026 forecast shows daily high temperatures ranging from 93° to 107°, with overnight lows between 68° and 78°. The average high for August is 101° 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 August weather will actually feel in Marble Falls. See also: September | October | November.