S
M
T
W
T
F
S
29
50°
37°
30
52°
32°
31
59°
34°
1
52°
41°
2
54°
39°
3
59°
37°
4
66°
37°
5
70°
46°
6
75°
41°
7
61°
39°
8
64°
34°
9
68°
34°
10
73°
41°
11
59°
46°
12
57°
46°
13
55°
45°
14
48°
43°
15
46°
33°
16
58°
37°
17
57°
36°
18
68°
47°
19
68°
48°
20
71°
47°
21
62°
47°
22
61°
41°
23
64°
40°
24
68°
42°
25
66°
43°
26
64°
43°
27
65°
42°
28
63°
41°
29
56°
37°
30
55°
39°
1
56°
38°
2
57°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Chehalis
Chehalis's April 2026 forecast shows daily high temperatures ranging from 46° to 71°, with overnight lows between 33° and 48°. The average high for April is 61° with an average low of 41°. 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 Chehalis. See also: May | June | July.