S
M
T
W
T
F
S
31
67°
50°
1
70°
49°
2
66°
48°
3
65°
48°
4
65°
50°
5
66°
51°
6
73°
51°
7
74°
53°
8
75°
54°
9
75°
52°
10
69°
47°
11
68°
45°
12
67°
46°
13
67°
45°
14
69°
51°
15
71°
50°
16
69°
54°
17
69°
52°
18
70°
53°
19
69°
51°
20
70°
50°
21
70°
49°
22
71°
56°
23
74°
58°
24
79°
57°
25
77°
54°
26
71°
54°
27
72°
56°
28
74°
56°
29
80°
58°
30
81°
55°
1
82°
56°
2
78°
57°
3
75°
54°
4
76°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Cornish
Cornish's June 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 45° and 58°. The average high for June is 72° with an average low of 52°. 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 Cornish. See also: July | August | September.