S
M
T
W
T
F
S
26
93°
63°
27
88°
61°
28
85°
61°
29
86°
59°
30
79°
57°
31
78°
53°
1
87°
52°
2
93°
64°
3
85°
49°
4
64°
42°
5
78°
42°
6
88°
52°
7
78°
55°
8
92°
55°
9
83°
51°
10
91°
54°
11
86°
58°
12
73°
54°
13
65°
55°
14
78°
57°
15
68°
53°
16
75°
49°
17
79°
51°
18
76°
53°
19
79°
52°
20
85°
53°
21
84°
57°
22
76°
57°
23
83°
59°
24
82°
57°
25
77°
52°
26
79°
47°
27
81°
53°
28
88°
56°
29
83°
56°
30
78°
52°
31
79°
44°
1
71°
53°
2
83°
51°
3
83°
56°
4
86°
51°
5
86°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Keystone
Keystone's August 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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. See also: September | October | November.
