S
M
T
W
T
F
S
26
81°
65°
27
83°
64°
28
84°
66°
29
84°
67°
30
85°
66°
31
84°
66°
1
81°
65°
2
78°
62°
3
77°
64°
4
79°
65°
5
80°
65°
6
81°
64°
7
83°
65°
8
84°
66°
9
84°
66°
10
83°
65°
11
83°
65°
12
84°
64°
13
83°
66°
14
87°
65°
15
86°
64°
16
81°
65°
17
82°
64°
18
83°
64°
19
82°
59°
20
82°
56°
21
75°
54°
22
74°
56°
23
75°
56°
24
77°
57°
25
75°
55°
26
74°
60°
27
74°
56°
28
75°
54°
29
73°
54°
30
74°
54°
31
73°
53°
1
72°
56°
2
73°
55°
3
72°
57°
4
73°
54°
5
74°
54°
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 72° to 87°, with overnight lows between 53° and 67°. The average high for August is 79° with an average low of 61°. 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.