S
M
T
W
T
F
S
31
75°
38°
1
72°
49°
2
76°
45°
3
81°
47°
4
83°
51°
5
91°
63°
6
87°
65°
7
83°
57°
8
83°
54°
9
86°
59°
10
89°
62°
11
88°
64°
12
89°
67°
13
92°
64°
14
89°
65°
15
82°
62°
16
79°
61°
17
78°
59°
18
77°
56°
19
81°
59°
20
78°
58°
21
82°
54°
22
75°
53°
23
75°
53°
24
76°
59°
25
83°
62°
26
83°
60°
27
81°
55°
28
77°
55°
29
78°
56°
30
75°
54°
1
77°
56°
2
78°
55°
3
82°
58°
4
84°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Keystone
Keystone's June 2026 forecast shows daily high temperatures ranging from 75° to 92°, with overnight lows between 53° and 67°. The average high for June is 82° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Keystone. See also: July | August | September.
