S
M
T
W
T
F
S
28
75°
61°
29
78°
66°
30
89°
65°
1
92°
71°
2
101°
78°
3
100°
82°
4
94°
76°
5
79°
69°
6
73°
66°
7
68°
60°
8
78°
65°
9
91°
72°
10
90°
69°
11
83°
63°
12
79°
65°
13
82°
69°
14
85°
67°
15
81°
65°
16
83°
66°
17
83°
67°
18
80°
65°
19
79°
66°
20
78°
65°
21
78°
63°
22
79°
63°
23
78°
64°
24
78°
63°
25
79°
66°
26
79°
68°
27
81°
70°
28
84°
70°
29
84°
69°
30
83°
69°
31
80°
68°
1
81°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Somerville
Somerville's July 2026 forecast shows daily high temperatures ranging from 68° to 91°, with overnight lows between 60° and 72°. The average high for July is 81° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Somerville. See also: August | September | October.