S
M
T
W
T
F
S
29
60°
43°
30
54°
35°
31
53°
32°
1
54°
38°
2
59°
41°
3
64°
35°
4
70°
39°
5
71°
46°
6
80°
44°
7
71°
49°
8
66°
41°
9
72°
40°
10
72°
48°
11
71°
48°
12
65°
44°
13
70°
48°
14
57°
39°
15
56°
39°
16
59°
36°
17
62°
35°
18
68°
39°
19
75°
47°
20
82°
54°
21
81°
56°
22
66°
48°
23
72°
42°
24
69°
45°
25
64°
44°
26
71°
51°
27
70°
52°
28
69°
51°
29
71°
54°
30
72°
54°
1
73°
54°
2
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Mattawa
Mattawa's April 2026 forecast shows daily high temperatures ranging from 64° to 82°, with overnight lows between 42° and 56°. The average high for April is 72° with an average low of 51°. 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 Mattawa. See also: May | June | July.