S
M
T
W
T
F
S
31
78°
47°
1
73°
54°
2
78°
49°
3
82°
51°
4
85°
58°
5
87°
62°
6
87°
68°
7
84°
63°
8
86°
58°
9
83°
63°
10
84°
64°
11
87°
63°
12
86°
64°
13
87°
63°
14
88°
62°
15
85°
56°
16
75°
55°
17
77°
55°
18
78°
56°
19
79°
57°
20
79°
61°
21
80°
62°
22
80°
62°
23
84°
61°
24
81°
60°
25
81°
60°
26
82°
64°
27
85°
64°
28
81°
61°
29
81°
57°
30
80°
58°
1
80°
57°
2
81°
59°
3
82°
65°
4
82°
61°
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 75° to 88°, with overnight lows between 49° and 68°. The average high for June is 82° with an average low of 60°. 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.