S
M
T
W
T
F
S
31
72°
42°
1
81°
43°
2
85°
52°
3
79°
47°
4
79°
47°
5
81°
46°
6
71°
38°
7
65°
42°
8
73°
46°
9
79°
48°
10
81°
47°
11
83°
46°
12
87°
48°
13
84°
49°
14
87°
56°
15
68°
42°
16
76°
50°
17
80°
51°
18
79°
50°
19
80°
51°
20
80°
51°
21
81°
52°
22
82°
52°
23
81°
51°
24
81°
50°
25
80°
52°
26
82°
52°
27
80°
49°
28
75°
45°
29
80°
51°
30
84°
53°
1
84°
53°
2
85°
54°
3
86°
55°
4
85°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mount Shasta
Mount Shasta's June 2026 forecast shows daily high temperatures ranging from 65° to 87°, with overnight lows between 38° and 56°. The average high for June is 80° with an average low of 49°. 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 Mount Shasta. See also: July | August | September.