S
M
T
W
T
F
S
31
71°
41°
1
69°
47°
2
73°
44°
3
78°
51°
4
82°
47°
5
83°
53°
6
74°
57°
7
76°
52°
8
77°
54°
9
80°
56°
10
78°
66°
11
81°
64°
12
73°
58°
13
80°
53°
14
66°
49°
15
65°
45°
16
71°
47°
17
70°
53°
18
66°
56°
19
67°
49°
20
70°
46°
21
72°
47°
22
71°
51°
23
71°
50°
24
72°
50°
25
68°
55°
26
71°
51°
27
77°
54°
28
80°
56°
29
80°
57°
30
88°
65°
1
91°
68°
2
90°
70°
3
90°
67°
4
82°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Grand Valley
Grand Valley's June 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for June is ° with an average low of °. 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 Grand Valley. See also: July | August | September.