S
M
T
W
T
F
S
26
62°
46°
27
64°
46°
28
70°
43°
29
74°
46°
30
74°
49°
1
66°
51°
2
66°
54°
3
65°
47°
4
66°
46°
5
64°
50°
6
71°
47°
7
75°
53°
8
71°
52°
9
70°
52°
10
67°
50°
11
66°
52°
12
60°
50°
13
68°
51°
14
66°
47°
15
67°
49°
16
71°
45°
17
70°
46°
18
73°
43°
19
85°
49°
20
74°
48°
21
62°
49°
22
62°
51°
23
66°
50°
24
68°
47°
25
66°
49°
26
64°
51°
27
64°
49°
28
58°
47°
29
71°
52°
30
76°
52°
31
77°
50°
1
65°
48°
2
64°
53°
3
75°
53°
4
71°
50°
5
67°
52°
6
68°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arroyo Grande
Arroyo Grande's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May 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 May weather will actually feel in Arroyo Grande. See also: June | July | August.
