S
M
T
W
T
F
S
29
45°
20°
30
69°
35°
31
50°
37°
1
54°
37°
2
40°
34°
3
49°
35°
4
54°
37°
5
47°
37°
6
48°
29°
7
37°
24°
8
43°
24°
9
48°
25°
10
56°
37°
11
55°
36°
12
51°
31°
13
63°
40°
14
68°
47°
15
61°
48°
16
54°
43°
17
61°
41°
18
51°
43°
19
48°
35°
20
48°
28°
21
44°
38°
22
51°
36°
23
53°
37°
24
54°
38°
25
52°
39°
26
54°
40°
27
53°
39°
28
54°
39°
29
53°
40°
30
54°
42°
1
54°
44°
2
55°
43°
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 44° to 61°, with overnight lows between 28° and 44°. The average high for April is 52° with an average low of 39°. 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.