S
M
T
W
T
F
S
31
72°
41°
1
84°
46°
2
87°
50°
3
71°
51°
4
72°
51°
5
68°
47°
6
64°
47°
7
68°
42°
8
61°
51°
9
66°
49°
10
70°
49°
11
80°
46°
12
81°
48°
13
91°
54°
14
96°
54°
15
98°
60°
16
87°
55°
17
80°
50°
18
81°
52°
19
86°
55°
20
76°
54°
21
80°
47°
22
91°
52°
23
91°
58°
24
92°
57°
25
72°
52°
26
72°
53°
27
67°
53°
28
72°
54°
29
67°
55°
30
68°
55°
1
72°
54°
2
71°
53°
3
80°
53°
4
81°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Cascadia
Cascadia's June 2026 forecast shows daily high temperatures ranging from 71° to 81°, with overnight lows between 53° and 53°. The average high for June is 77° with an average low of 53°. 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 Cascadia. See also: July | August | September.