S
M
T
W
T
F
S
29
74°
48°
30
66°
48°
31
68°
54°
1
67°
51°
2
66°
51°
3
74°
52°
4
81°
49°
5
81°
54°
6
70°
52°
7
76°
51°
8
80°
47°
9
67°
52°
10
66°
52°
11
64°
53°
12
64°
46°
13
63°
44°
14
70°
44°
15
70°
44°
16
71°
47°
17
71°
50°
18
75°
45°
19
68°
44°
20
67°
42°
21
66°
51°
22
65°
45°
23
76°
46°
24
67°
47°
25
59°
50°
26
62°
46°
27
64°
46°
28
70°
43°
29
74°
46°
30
74°
49°
1
66°
51°
2
66°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Arroyo Grande
Arroyo Grande's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April is ° with an average low of °. 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 Arroyo Grande. See also: May | June | July.