S
M
T
W
T
F
S
26
90°
75°
27
90°
72°
28
95°
75°
29
88°
68°
30
84°
63°
31
86°
59°
1
86°
68°
2
81°
66°
3
81°
68°
4
86°
68°
5
88°
70°
6
86°
68°
7
90°
68°
8
86°
68°
9
88°
70°
10
90°
68°
11
91°
70°
12
90°
70°
13
91°
72°
14
91°
72°
15
93°
72°
16
93°
70°
17
95°
72°
18
86°
66°
19
88°
63°
20
91°
70°
21
88°
68°
22
88°
66°
23
85°
63°
24
84°
58°
25
85°
61°
26
87°
66°
27
86°
65°
28
86°
64°
29
88°
64°
30
91°
66°
31
89°
67°
1
85°
62°
2
84°
60°
3
84°
61°
4
85°
61°
5
86°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Smithville
Smithville's August 2026 forecast shows daily high temperatures ranging from 84° to 91°, with overnight lows between 58° and 67°. The average high for August is 86° with an average low of 63°. 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 Smithville. See also: September | October | November.