S
M
T
W
T
F
S
31
62°
48°
1
60°
47°
2
65°
48°
3
71°
52°
4
74°
54°
5
73°
59°
6
71°
57°
7
70°
57°
8
72°
56°
9
71°
57°
10
72°
60°
11
74°
53°
12
71°
55°
13
69°
55°
14
73°
57°
15
69°
55°
16
72°
57°
17
76°
59°
18
74°
54°
19
69°
54°
20
73°
58°
21
75°
57°
22
74°
57°
23
72°
60°
24
71°
61°
25
72°
58°
26
72°
55°
27
71°
56°
28
73°
59°
29
78°
62°
30
77°
60°
1
73°
62°
2
74°
63°
3
75°
60°
4
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Portland
Portland's June 2026 forecast shows daily high temperatures ranging from 60° to 78°, with overnight lows between 47° and 63°. The average high for June is 72° with an average low of 57°. 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 Portland. See also: July | August | September.