S
M
T
W
T
F
S
29
58°
44°
30
57°
45°
31
58°
47°
1
53°
49°
2
56°
35°
3
59°
41°
4
66°
46°
5
65°
45°
6
57°
48°
7
56°
48°
8
55°
45°
9
56°
41°
10
57°
42°
11
57°
41°
12
58°
45°
13
58°
47°
14
57°
46°
15
58°
44°
16
61°
47°
17
60°
48°
18
55°
48°
19
54°
43°
20
52°
42°
21
53°
41°
22
54°
41°
23
53°
42°
24
54°
42°
25
55°
45°
26
54°
45°
27
54°
42°
28
60°
47°
29
59°
47°
30
61°
49°
1
61°
49°
2
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Arcata
Arcata's April 2026 forecast shows daily high temperatures ranging from 52° to 66°, with overnight lows between 35° and 49°. The average high for April is 57° with an average low of 45°. 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 Arcata. See also: May | June | July.