S
M
T
W
T
F
S
31
69°
54°
1
79°
55°
2
78°
55°
3
77°
56°
4
78°
55°
5
79°
54°
6
80°
50°
7
76°
50°
8
74°
51°
9
73°
52°
10
76°
54°
11
74°
51°
12
76°
58°
13
82°
59°
14
82°
59°
15
84°
60°
16
83°
60°
17
84°
59°
18
84°
53°
19
83°
60°
20
84°
60°
21
84°
61°
22
85°
60°
23
86°
61°
24
85°
62°
25
86°
61°
26
85°
55°
27
79°
54°
28
77°
55°
29
78°
58°
30
79°
59°
1
80°
63°
2
84°
62°
3
80°
61°
4
81°
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 69° to 86°, with overnight lows between 50° and 63°. The average high for June is 80° 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.