S
M
T
W
T
F
S
29
44°
29°
30
49°
25°
31
55°
30°
1
46°
42°
2
57°
40°
3
52°
43°
4
62°
38°
5
67°
36°
6
68°
38°
7
57°
34°
8
61°
31°
9
66°
33°
10
68°
34°
11
55°
46°
12
60°
48°
13
59°
47°
14
47°
40°
15
50°
30°
16
56°
29°
17
57°
36°
18
61°
34°
19
67°
49°
20
75°
49°
21
64°
47°
22
63°
44°
23
64°
43°
24
65°
47°
25
65°
48°
26
67°
46°
27
63°
45°
28
64°
44°
29
62°
47°
30
66°
45°
1
66°
47°
2
61°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Chemainus
Chemainus's April 2026 forecast shows daily high temperatures ranging from 61° to 75°, with overnight lows between 43° and 49°. The average high for April is 65° with an average low of 46°. 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 Chemainus. See also: May | June | July.