S
M
T
W
T
F
S
26
84°
66°
27
80°
60°
28
78°
59°
29
80°
63°
30
83°
62°
31
81°
60°
1
82°
58°
2
80°
57°
3
80°
59°
4
79°
58°
5
79°
59°
6
80°
61°
7
80°
63°
8
79°
62°
9
79°
65°
10
80°
64°
11
80°
65°
12
81°
59°
13
84°
63°
14
86°
57°
15
79°
57°
16
79°
58°
17
84°
63°
18
85°
59°
19
80°
58°
20
79°
56°
21
80°
57°
22
80°
58°
23
78°
63°
24
78°
57°
25
79°
63°
26
84°
64°
27
84°
64°
28
85°
63°
29
86°
59°
30
86°
55°
31
77°
58°
1
78°
58°
2
77°
62°
3
83°
61°
4
81°
55°
5
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Weirton
Weirton's August 2026 forecast shows daily high temperatures ranging from 77° to 86°, with overnight lows between 55° and 66°. The average high for August is 81° with an average low of 60°. 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 Weirton. See also: September | October | November.