S
M
T
W
T
F
S
26
84°
67°
27
83°
62°
28
80°
61°
29
81°
66°
30
85°
65°
31
81°
65°
1
86°
67°
2
86°
61°
3
81°
60°
4
80°
61°
5
81°
62°
6
82°
63°
7
83°
61°
8
80°
60°
9
84°
66°
10
87°
63°
11
81°
66°
12
86°
67°
13
87°
67°
14
85°
66°
15
86°
66°
16
87°
59°
17
79°
61°
18
80°
65°
19
79°
60°
20
79°
59°
21
77°
59°
22
79°
60°
23
85°
62°
24
86°
65°
25
87°
64°
26
86°
57°
27
78°
56°
28
77°
56°
29
77°
57°
30
82°
63°
31
83°
64°
1
83°
63°
2
84°
59°
3
78°
60°
4
83°
63°
5
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Sewickley
Sewickley's August 2026 forecast shows daily high temperatures ranging from 76° to 87°, with overnight lows between 56° and 67°. The average high for August is 82° with an average low of 62°. 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 Sewickley. See also: September | October | November.
