S
M
T
W
T
F
S
26
56°
38°
27
59°
37°
28
52°
36°
29
51°
44°
30
54°
45°
1
63°
40°
2
59°
38°
3
54°
42°
4
66°
48°
5
66°
54°
6
63°
51°
7
60°
45°
8
58°
42°
9
58°
45°
10
61°
48°
11
62°
49°
12
63°
47°
13
62°
47°
14
62°
50°
15
66°
51°
16
65°
48°
17
69°
51°
18
69°
53°
19
68°
52°
20
64°
52°
21
64°
53°
22
65°
52°
23
65°
49°
24
61°
49°
25
63°
50°
26
64°
54°
27
64°
52°
28
65°
50°
29
64°
48°
30
65°
51°
31
66°
55°
1
69°
54°
2
68°
51°
3
66°
56°
4
70°
56°
5
67°
55°
6
67°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wareham
Wareham's May 2026 forecast shows daily high temperatures ranging from 54° to 70°, with overnight lows between 42° and 57°. The average high for May is 64° 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 Wareham. See also: June | July | August.