S
M
T
W
T
F
S
28
75°
37°
29
77°
41°
30
80°
40°
1
81°
42°
2
81°
43°
3
82°
43°
4
81°
44°
5
80°
43°
6
75°
40°
7
74°
43°
8
75°
43°
9
77°
44°
10
78°
44°
11
75°
43°
12
77°
44°
13
72°
43°
14
71°
41°
15
70°
43°
16
76°
39°
17
74°
39°
18
75°
41°
19
76°
42°
20
76°
43°
21
78°
45°
22
79°
42°
23
70°
43°
24
75°
44°
25
78°
43°
26
77°
43°
27
77°
41°
28
72°
42°
29
70°
41°
30
77°
42°
31
76°
43°
1
73°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Keystone
Keystone's July 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 37° and 45°. The average high for July is 76° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Keystone. See also: August | September | October.
