S
M
T
W
T
F
S
26
53°
40°
27
56°
36°
28
51°
41°
29
49°
44°
30
50°
45°
1
60°
45°
2
58°
43°
3
52°
42°
4
63°
41°
5
64°
49°
6
64°
52°
7
61°
48°
8
60°
40°
9
59°
37°
10
67°
51°
11
57°
42°
12
59°
47°
13
61°
41°
14
63°
48°
15
55°
43°
16
67°
47°
17
82°
54°
18
73°
56°
19
72°
58°
20
84°
57°
21
62°
51°
22
57°
49°
23
61°
45°
24
55°
53°
25
65°
54°
26
72°
58°
27
80°
58°
28
63°
52°
29
62°
49°
30
63°
50°
31
63°
51°
1
68°
52°
2
63°
52°
3
68°
54°
4
72°
55°
5
69°
56°
6
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Provincetown
Provincetown's May 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 49° and 58°. The average high for May is 67° with an average low of 53°. 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 Provincetown. See also: June | July | August.