S
M
T
W
T
F
S
26
79°
58°
27
79°
58°
28
79°
58°
29
77°
55°
30
76°
61°
31
77°
59°
1
79°
60°
2
83°
62°
3
83°
63°
4
82°
61°
5
79°
57°
6
77°
56°
7
83°
61°
8
83°
60°
9
81°
61°
10
83°
59°
11
77°
55°
12
80°
59°
13
83°
61°
14
81°
54°
15
75°
53°
16
75°
53°
17
76°
59°
18
75°
60°
19
77°
60°
20
76°
59°
21
79°
60°
22
77°
59°
23
75°
58°
24
82°
52°
25
80°
59°
26
84°
58°
27
82°
57°
28
83°
58°
29
75°
51°
30
74°
51°
31
75°
57°
1
79°
58°
2
73°
59°
3
81°
59°
4
82°
56°
5
81°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slippery Rock
Slippery Rock's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 51° and 63°. The average high for August is 79° with an average low of 58°. 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 Slippery Rock. See also: September | October | November.