S
M
T
W
T
F
S
26
81°
63°
27
85°
64°
28
79°
67°
29
75°
65°
30
83°
62°
31
84°
60°
1
78°
67°
2
72°
62°
3
79°
62°
4
81°
58°
5
77°
60°
6
85°
67°
7
80°
70°
8
83°
67°
9
81°
62°
10
82°
70°
11
83°
65°
12
83°
63°
13
82°
65°
14
81°
63°
15
76°
64°
16
77°
69°
17
79°
61°
18
79°
66°
19
75°
60°
20
76°
60°
21
78°
60°
22
76°
60°
23
75°
59°
24
74°
58°
25
74°
59°
26
78°
61°
27
78°
59°
28
77°
64°
29
78°
58°
30
77°
63°
31
71°
57°
1
71°
61°
2
74°
62°
3
71°
62°
4
71°
60°
5
72°
57°
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 71° to 79°, with overnight lows between 57° and 69°. The average high for August is 75° 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.