S
M
T
W
T
F
S
26
64°
52°
27
68°
50°
28
72°
46°
29
73°
48°
30
70°
52°
1
75°
55°
2
73°
57°
3
70°
55°
4
68°
54°
5
66°
52°
6
72°
48°
7
75°
50°
8
77°
57°
9
79°
57°
10
77°
55°
11
82°
54°
12
64°
55°
13
73°
54°
14
72°
54°
15
72°
57°
16
73°
57°
17
66°
57°
18
72°
55°
19
84°
52°
20
84°
50°
21
79°
54°
22
74°
56°
23
75°
56°
24
76°
54°
25
76°
58°
26
74°
57°
27
72°
54°
28
75°
57°
29
75°
59°
30
76°
57°
31
75°
56°
1
78°
56°
2
77°
55°
3
74°
53°
4
72°
52°
5
74°
57°
6
79°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bonsall
Bonsall's May 2026 forecast shows daily high temperatures ranging from 72° to 84°, with overnight lows between 50° and 59°. The average high for May is 76° with an average low of 56°. 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 Bonsall. See also: June | July | August.
