S
M
T
W
T
F
S
29
79°
58°
30
70°
57°
31
71°
64°
1
72°
61°
2
72°
60°
3
84°
57°
4
86°
55°
5
79°
58°
6
75°
62°
7
73°
58°
8
74°
60°
9
73°
61°
10
71°
63°
11
71°
61°
12
68°
59°
13
66°
57°
14
70°
55°
15
72°
56°
16
72°
56°
17
80°
55°
18
81°
60°
19
78°
57°
20
70°
57°
21
69°
57°
22
67°
58°
23
71°
59°
24
68°
58°
25
70°
61°
26
70°
60°
27
72°
58°
28
72°
59°
29
71°
57°
30
68°
54°
1
74°
58°
2
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Irvine
Irvine's April 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 54° and 61°. The average high for April is 72° with an average low of 58°. 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 Irvine. See also: May | June | July.