S
M
T
W
T
F
S
26
62°
37°
27
71°
33°
28
64°
34°
29
68°
46°
30
61°
47°
1
64°
46°
2
60°
39°
3
60°
40°
4
68°
49°
5
82°
58°
6
70°
49°
7
61°
37°
8
60°
38°
9
62°
45°
10
67°
46°
11
66°
44°
12
66°
47°
13
63°
45°
14
66°
46°
15
65°
47°
16
66°
48°
17
66°
47°
18
67°
52°
19
74°
52°
20
73°
51°
21
71°
53°
22
75°
50°
23
68°
50°
24
72°
49°
25
69°
46°
26
69°
50°
27
68°
53°
28
70°
55°
29
76°
55°
30
75°
54°
31
75°
51°
1
71°
48°
2
68°
48°
3
68°
49°
4
71°
48°
5
70°
49°
6
71°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Somerville
Somerville's May 2026 forecast shows daily high temperatures ranging from 60° to 82°, with overnight lows between 37° and 58°. The average high for May is 68° with an average low of 48°. 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 Somerville. See also: June | July | August.
