S
M
T
W
T
F
S
26
92°
73°
27
92°
73°
28
92°
73°
29
89°
72°
30
93°
73°
31
93°
73°
1
94°
74°
2
93°
74°
3
94°
73°
4
94°
73°
5
93°
72°
6
94°
72°
7
94°
73°
8
93°
74°
9
94°
73°
10
94°
73°
11
92°
72°
12
92°
72°
13
89°
71°
14
89°
72°
15
87°
67°
16
87°
69°
17
88°
70°
18
88°
71°
19
90°
71°
20
91°
70°
21
87°
71°
22
90°
71°
23
91°
70°
24
93°
70°
25
92°
70°
26
92°
71°
27
91°
69°
28
92°
70°
29
91°
69°
30
90°
70°
31
89°
69°
1
91°
69°
2
90°
68°
3
85°
64°
4
85°
62°
5
83°
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 83° to 94°, with overnight lows between 62° and 74°. The average high for August is 91° with an average low of 71°. 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.