S
M
T
W
T
F
S
26
84°
62°
27
85°
63°
28
87°
63°
29
85°
64°
30
86°
65°
31
88°
67°
1
90°
68°
2
90°
68°
3
89°
67°
4
89°
66°
5
90°
62°
6
88°
61°
7
84°
62°
8
85°
62°
9
85°
63°
10
86°
64°
11
88°
63°
12
89°
62°
13
89°
63°
14
90°
67°
15
90°
66°
16
89°
66°
17
89°
64°
18
88°
65°
19
84°
61°
20
84°
65°
21
88°
66°
22
84°
65°
23
86°
60°
24
87°
64°
25
89°
65°
26
90°
66°
27
90°
65°
28
89°
66°
29
89°
65°
30
87°
64°
31
87°
63°
1
86°
62°
2
86°
63°
3
85°
62°
4
87°
64°
5
87°
62°
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 90°, with overnight lows between 60° and 68°. The average high for August is 87° with an average low of 64°. 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.