S
M
T
W
T
F
S
26
81°
58°
27
86°
65°
28
81°
66°
29
79°
63°
30
83°
55°
31
85°
55°
1
81°
62°
2
83°
68°
3
81°
64°
4
88°
70°
5
88°
69°
6
84°
69°
7
81°
67°
8
82°
67°
9
86°
68°
10
85°
70°
11
86°
66°
12
81°
63°
13
79°
63°
14
82°
62°
15
81°
64°
16
78°
62°
17
80°
61°
18
85°
64°
19
86°
65°
20
84°
64°
21
82°
60°
22
84°
64°
23
86°
65°
24
86°
65°
25
83°
64°
26
84°
65°
27
83°
64°
28
82°
63°
29
81°
62°
30
80°
63°
31
81°
63°
1
83°
62°
2
76°
56°
3
75°
55°
4
75°
57°
5
78°
57°
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 75° to 88°, with overnight lows between 55° and 70°. The average high for August is 82° 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 Weirton. See also: September | October | November.