S
M
T
W
T
F
S
26
60°
34°
27
65°
34°
28
52°
40°
29
48°
42°
30
47°
43°
1
62°
38°
2
51°
37°
3
55°
40°
4
71°
39°
5
68°
47°
6
59°
51°
7
63°
43°
8
59°
36°
9
56°
36°
10
61°
47°
11
61°
42°
12
59°
37°
13
52°
36°
14
61°
47°
15
60°
48°
16
75°
49°
17
84°
61°
18
64°
51°
19
92°
49°
20
89°
62°
21
66°
47°
22
65°
43°
23
64°
46°
24
57°
48°
25
61°
47°
26
73°
55°
27
72°
49°
28
66°
49°
29
67°
46°
30
68°
49°
31
73°
54°
1
71°
51°
2
67°
51°
3
68°
54°
4
72°
50°
5
74°
54°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Yarmouth
Yarmouth's May 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 43° and 55°. The average high for May is 68° with an average low of 50°. 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 Yarmouth. See also: June | July | August.