S
M
T
W
T
F
S
31
77°
47°
1
77°
56°
2
75°
52°
3
81°
48°
4
84°
56°
5
85°
64°
6
85°
66°
7
86°
70°
8
85°
67°
9
89°
71°
10
90°
71°
11
88°
70°
12
78°
67°
13
84°
62°
14
78°
57°
15
71°
53°
16
77°
56°
17
73°
56°
18
72°
58°
19
78°
54°
20
79°
62°
21
74°
56°
22
68°
58°
23
77°
56°
24
78°
54°
25
79°
64°
26
73°
61°
27
75°
66°
28
83°
68°
29
91°
71°
30
93°
76°
1
95°
73°
2
95°
73°
3
89°
72°
4
88°
69°
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 88° to 95°, with overnight lows between 69° and 73°. The average high for June is 92° with an average low of 72°. 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.
