S
M
T
W
T
F
S
28
83°
51°
29
83°
51°
30
75°
50°
1
74°
50°
2
67°
54°
3
69°
55°
4
80°
52°
5
55°
42°
6
65°
49°
7
81°
57°
8
86°
53°
9
76°
57°
10
76°
59°
11
70°
49°
12
66°
48°
13
64°
49°
14
70°
52°
15
74°
54°
16
71°
54°
17
73°
55°
18
74°
56°
19
76°
58°
20
69°
55°
21
73°
55°
22
75°
56°
23
75°
55°
24
74°
55°
25
73°
56°
26
73°
56°
27
72°
55°
28
71°
56°
29
75°
56°
30
73°
55°
31
73°
56°
1
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Portland
Portland's July 2026 forecast shows daily high temperatures ranging from 64° to 86°, with overnight lows between 48° and 59°. The average high for July is 73° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Portland. See also: August | September | October.
