S
M
T
W
T
F
S
26
89°
71°
27
90°
71°
28
89°
70°
29
90°
72°
30
91°
71°
31
89°
70°
1
85°
68°
2
83°
64°
3
83°
69°
4
82°
69°
5
83°
70°
6
84°
69°
7
84°
67°
8
85°
66°
9
84°
67°
10
85°
69°
11
85°
69°
12
84°
68°
13
86°
69°
14
92°
68°
15
92°
69°
16
87°
67°
17
84°
69°
18
88°
68°
19
84°
63°
20
84°
61°
21
83°
60°
22
81°
60°
23
83°
61°
24
83°
61°
25
84°
64°
26
83°
66°
27
86°
63°
28
88°
66°
29
89°
66°
30
89°
65°
31
88°
63°
1
82°
65°
2
84°
65°
3
81°
60°
4
81°
59°
5
82°
64°
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 81° to 92°, with overnight lows between 59° and 72°. The average high for August is 85° with an average low of 66°. 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.