S
M
T
W
T
F
S
29
56°
21°
30
71°
41°
31
79°
58°
1
76°
51°
2
52°
42°
3
62°
41°
4
75°
46°
5
56°
43°
6
53°
36°
7
50°
31°
8
51°
23°
9
59°
26°
10
71°
36°
11
61°
33°
12
63°
46°
13
79°
54°
14
83°
57°
15
85°
60°
16
84°
56°
17
79°
51°
18
78°
52°
19
73°
42°
20
58°
36°
21
61°
43°
22
68°
45°
23
71°
48°
24
67°
38°
25
57°
35°
26
59°
39°
27
59°
36°
28
60°
41°
29
62°
38°
30
66°
36°
1
61°
36°
2
61°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Portland
Portland's April 2026 forecast shows daily high temperatures ranging from 57° to 85°, with overnight lows between 33° and 60°. The average high for April is 68° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Portland. See also: May | June | July.