S
M
T
W
T
F
S
29
45°
19°
30
56°
33°
31
39°
25°
1
33°
18°
2
36°
20°
3
44°
31°
4
36°
31°
5
36°
29°
6
29°
-2°
7
29°
14°
8
37°
33°
9
46°
22°
10
43°
20°
11
43°
26°
12
43°
35°
13
55°
36°
14
56°
35°
15
38°
15°
16
49°
35°
17
57°
40°
18
58°
35°
19
51°
25°
20
49°
30°
21
45°
32°
22
47°
33°
23
46°
34°
24
45°
29°
25
41°
26°
26
43°
31°
27
47°
31°
28
46°
32°
29
44°
29°
30
47°
34°
1
46°
29°
2
48°
31°
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 29° to 58°, with overnight lows between -2° and 40°. The average high for April is 45° with an average low of 29°. 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.
