S
M
T
W
T
F
S
26
86°
72°
27
86°
76°
28
89°
75°
29
85°
65°
30
73°
64°
1
64°
52°
2
74°
49°
3
78°
50°
4
81°
56°
5
85°
68°
6
82°
63°
7
73°
59°
8
79°
62°
9
89°
71°
10
89°
65°
11
78°
64°
12
82°
63°
13
86°
61°
14
88°
64°
15
87°
67°
16
87°
69°
17
87°
76°
18
89°
77°
19
87°
70°
20
79°
71°
21
77°
68°
22
82°
70°
23
78°
68°
24
84°
66°
25
84°
65°
26
85°
67°
27
87°
69°
28
87°
68°
29
89°
70°
30
89°
68°
31
88°
67°
1
89°
66°
2
92°
69°
3
88°
66°
4
87°
64°
5
87°
67°
6
88°
70°
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 77° to 92°, with overnight lows between 64° and 71°. The average high for May is 86° with an average low of 68°. 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.
