S
M
T
W
T
F
S
26
62°
37°
27
71°
33°
28
64°
34°
29
68°
46°
30
61°
47°
1
65°
35°
2
60°
44°
3
61°
37°
4
74°
33°
5
85°
61°
6
70°
47°
7
62°
41°
8
64°
49°
9
65°
50°
10
74°
49°
11
64°
41°
12
65°
40°
13
63°
48°
14
71°
51°
15
72°
51°
16
71°
50°
17
72°
49°
18
69°
47°
19
75°
51°
20
74°
52°
21
74°
51°
22
73°
45°
23
68°
44°
24
66°
45°
25
67°
45°
26
68°
47°
27
69°
46°
28
68°
47°
29
69°
46°
30
69°
47°
31
70°
55°
1
73°
53°
2
71°
49°
3
71°
53°
4
75°
56°
5
74°
52°
6
75°
56°
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 62° to 85°, with overnight lows between 40° and 61°. The average high for May is 70° with an average low of 49°. 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.
