S
M
T
W
T
F
S
29
63°
37°
30
66°
37°
31
53°
36°
1
37°
30°
2
39°
31°
3
42°
33°
4
43°
31°
5
53°
36°
6
39°
19°
7
42°
29°
8
65°
45°
9
55°
31°
10
50°
35°
11
55°
39°
12
56°
42°
13
62°
38°
14
60°
38°
15
58°
38°
16
62°
39°
17
55°
34°
18
57°
41°
19
61°
40°
20
60°
38°
21
54°
40°
22
52°
41°
23
63°
39°
24
54°
36°
25
57°
41°
26
54°
42°
27
57°
42°
28
63°
38°
29
58°
38°
30
63°
43°
1
61°
39°
2
59°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Eureka
Eureka's April 2026 forecast shows daily high temperatures ranging from 39° to 65°, with overnight lows between 19° and 45°. The average high for April is 56° with an average low of 38°. 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 Eureka. See also: May | June | July.
