S
M
T
W
T
F
S
31
75°
38°
1
72°
49°
2
76°
45°
3
81°
47°
4
83°
51°
5
86°
53°
6
85°
62°
7
79°
59°
8
75°
57°
9
84°
54°
10
82°
66°
11
90°
69°
12
88°
66°
13
84°
59°
14
80°
58°
15
70°
56°
16
76°
55°
17
79°
62°
18
84°
61°
19
77°
54°
20
75°
52°
21
73°
54°
22
75°
55°
23
78°
57°
24
78°
55°
25
75°
55°
26
75°
56°
27
78°
59°
28
79°
58°
29
76°
55°
30
74°
56°
1
76°
55°
2
77°
57°
3
78°
61°
4
79°
58°
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 73° to 84°, with overnight lows between 52° and 62°. The average high for June is 77° with an average low of 57°. 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.
