S
M
T
W
T
F
S
31
73°
39°
1
84°
43°
2
90°
47°
3
71°
56°
4
69°
53°
5
61°
47°
6
60°
46°
7
65°
50°
8
62°
52°
9
63°
50°
10
65°
46°
11
75°
50°
12
80°
52°
13
82°
55°
14
85°
58°
15
85°
57°
16
80°
54°
17
75°
52°
18
74°
44°
19
68°
46°
20
75°
48°
21
76°
46°
22
68°
47°
23
67°
45°
24
68°
45°
25
76°
47°
26
78°
52°
27
79°
53°
28
78°
52°
29
78°
50°
30
77°
50°
1
74°
48°
2
72°
47°
3
77°
48°
4
76°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Rainier
Rainier's June 2026 forecast shows daily high temperatures ranging from 60° to 85°, with overnight lows between 44° and 58°. The average high for June is 73° with an average low of 50°. 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 Rainier. See also: July | August | September.