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
69°
40°
7
84°
46°
8
88°
53°
9
80°
53°
10
80°
59°
11
78°
50°
12
N/A
13
77°
56°
14
67°
59°
15
64°
55°
16
77°
54°
17
72°
53°
18
73°
52°
19
72°
54°
20
70°
53°
21
73°
58°
22
74°
56°
23
78°
58°
24
76°
59°
25
78°
57°
26
68°
49°
27
73°
56°
28
70°
56°
29
75°
55°
30
73°
56°
31
74°
56°
1
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Portland
Portland's July 2026 forecast shows daily high temperatures ranging from 64° to 78°, with overnight lows between 49° and 59°. The average high for July is 73° with an average low of 55°. 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.