S
M
T
W
T
F
S
31
74°
49°
1
75°
51°
2
74°
54°
3
78°
52°
4
82°
53°
5
83°
57°
6
82°
67°
7
83°
65°
8
87°
66°
9
82°
69°
10
81°
69°
11
86°
71°
12
82°
66°
13
83°
63°
14
82°
62°
15
77°
58°
16
79°
61°
17
79°
61°
18
78°
60°
19
83°
61°
20
78°
60°
21
80°
57°
22
80°
62°
23
77°
61°
24
76°
59°
25
81°
62°
26
83°
62°
27
83°
61°
28
78°
60°
29
77°
57°
30
79°
62°
1
83°
63°
2
80°
63°
3
81°
62°
4
80°
59°
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 76° to 87°, with overnight lows between 57° and 71°. The average high for June is 81° with an average low of 62°. 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.
