S
M
T
W
T
F
S
26
77°
49°
27
75°
54°
28
75°
56°
29
71°
53°
30
62°
45°
1
64°
40°
2
61°
41°
3
62°
34°
4
75°
43°
5
73°
53°
6
70°
52°
7
63°
44°
8
69°
38°
9
71°
48°
10
79°
49°
11
70°
45°
12
72°
41°
13
75°
52°
14
65°
43°
15
74°
40°
16
79°
57°
17
84°
56°
18
83°
65°
19
82°
64°
20
81°
60°
21
75°
64°
22
71°
65°
23
78°
66°
24
71°
66°
25
77°
65°
26
78°
67°
27
80°
67°
28
80°
60°
29
80°
63°
30
71°
58°
31
74°
61°
1
73°
54°
2
73°
51°
3
71°
57°
4
75°
58°
5
74°
60°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Monterey
Monterey's May 2026 forecast shows daily high temperatures ranging from 71° to 80°, with overnight lows between 51° and 63°. The average high for May is 75° 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 May weather will actually feel in Monterey. See also: June | July | August.
