S
M
T
W
T
F
S
26
87°
77°
27
91°
75°
28
91°
74°
29
92°
75°
30
93°
76°
31
90°
75°
1
91°
76°
2
89°
75°
3
93°
75°
4
93°
76°
5
92°
75°
6
92°
75°
7
89°
76°
8
89°
75°
9
90°
75°
10
92°
76°
11
91°
76°
12
90°
75°
13
89°
75°
14
89°
76°
15
91°
75°
16
90°
74°
17
90°
75°
18
89°
76°
19
90°
75°
20
89°
76°
21
91°
75°
22
92°
75°
23
92°
74°
24
90°
74°
25
92°
77°
26
91°
77°
27
91°
76°
28
89°
76°
29
89°
77°
30
90°
76°
31
91°
75°
1
90°
74°
2
89°
74°
3
89°
73°
4
90°
73°
5
88°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Keystone Park
Keystone Park's August 2026 forecast shows daily high temperatures ranging from 87° to 93°, with overnight lows between 73° and 77°. The average high for August is 90° with an average low of 75°. 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 Keystone Park. See also: September | October | November.
