S
M
T
W
T
F
S
26
84°
70°
27
89°
72°
28
89°
74°
29
84°
66°
30
85°
63°
31
85°
65°
1
83°
71°
2
80°
69°
3
84°
66°
4
87°
63°
5
88°
66°
6
88°
70°
7
91°
74°
8
91°
74°
9
91°
70°
10
93°
76°
11
94°
69°
12
84°
67°
13
92°
71°
14
90°
73°
15
95°
74°
16
96°
74°
17
85°
68°
18
86°
64°
19
84°
69°
20
81°
65°
21
83°
62°
22
84°
62°
23
83°
60°
24
82°
62°
25
86°
65°
26
85°
65°
27
87°
66°
28
86°
63°
29
83°
63°
30
82°
62°
31
88°
67°
1
88°
68°
2
84°
65°
3
79°
60°
4
78°
58°
5
79°
58°
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 78° to 88°, with overnight lows between 58° and 69°. The average high for August is 84° 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.