S
M
T
W
T
F
S
28
76°
57°
29
79°
55°
30
82°
59°
1
82°
51°
2
78°
55°
3
78°
55°
4
79°
51°
5
76°
54°
6
79°
55°
7
81°
57°
8
82°
59°
9
83°
52°
10
80°
56°
11
76°
56°
12
84°
60°
13
74°
64°
14
73°
65°
15
Hist. Avg.
78°
53°
16
Hist. Avg.
78°
53°
17
Hist. Avg.
79°
53°
18
Hist. Avg.
79°
53°
19
Hist. Avg.
79°
53°
20
Hist. Avg.
79°
54°
21
Hist. Avg.
79°
54°
22
Hist. Avg.
80°
54°
23
Hist. Avg.
80°
54°
24
Hist. Avg.
80°
54°
25
Hist. Avg.
80°
54°
26
Hist. Avg.
80°
54°
27
Hist. Avg.
80°
54°
28
Hist. Avg.
80°
54°
29
Hist. Avg.
80°
54°
30
Hist. Avg.
80°
54°
31
Hist. Avg.
80°
54°
1
Hist. Avg.
80°
54°
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 73° to 84°, with overnight lows between 51° and 65°. The average high for July is 79° 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 July weather will actually feel in Portland. See also: August | September | October.