S
M
T
W
T
F
S
29
53°
36°
30
58°
35°
31
56°
33°
1
54°
42°
2
58°
35°
3
61°
33°
4
73°
37°
5
79°
43°
6
77°
43°
7
61°
41°
8
68°
37°
9
75°
48°
10
69°
49°
11
66°
48°
12
61°
46°
13
56°
45°
14
53°
44°
15
54°
41°
16
56°
45°
17
57°
43°
18
54°
42°
19
59°
43°
20
60°
42°
21
59°
43°
22
60°
41°
23
55°
38°
24
55°
38°
25
56°
37°
26
56°
38°
27
60°
38°
28
61°
39°
29
57°
39°
30
57°
44°
1
58°
41°
2
58°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Helens
St. Helens's April 2026 forecast shows daily high temperatures ranging from 53° to 75°, with overnight lows between 37° and 49°. The average high for April is 59° with an average low of 42°. 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 St. Helens. See also: May | June | July.
