S
M
T
W
T
F
S
31
70°
44°
1
69°
44°
2
76°
44°
3
82°
45°
4
78°
53°
5
81°
50°
6
76°
62°
7
68°
51°
8
79°
52°
9
85°
66°
10
76°
63°
11
83°
67°
12
83°
59°
13
77°
57°
14
72°
51°
15
70°
51°
16
71°
52°
17
70°
55°
18
73°
56°
19
75°
55°
20
72°
54°
21
71°
55°
22
73°
56°
23
71°
57°
24
70°
55°
25
75°
55°
26
71°
56°
27
71°
58°
28
73°
53°
29
71°
51°
30
72°
57°
1
78°
56°
2
72°
54°
3
72°
58°
4
73°
56°
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 70° to 85°, with overnight lows between 51° and 67°. The average high for June is 74° with an average low of 56°. 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.