S
M
T
W
T
F
S
26
79°
68°
27
81°
70°
28
84°
70°
29
84°
69°
30
83°
69°
31
80°
68°
1
81°
69°
2
80°
70°
3
81°
70°
4
82°
69°
5
82°
68°
6
79°
68°
7
80°
69°
8
83°
65°
9
77°
62°
10
76°
62°
11
77°
68°
12
77°
66°
13
78°
67°
14
77°
69°
15
78°
69°
16
79°
67°
17
81°
62°
18
77°
60°
19
77°
65°
20
78°
66°
21
76°
64°
22
80°
61°
23
81°
63°
24
77°
61°
25
75°
59°
26
76°
61°
27
75°
60°
28
73°
58°
29
75°
60°
30
76°
65°
31
79°
66°
1
81°
66°
2
81°
65°
3
80°
58°
4
79°
57°
5
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Somerville
Somerville's August 2026 forecast shows daily high temperatures ranging from 73° to 84°, with overnight lows between 57° and 70°. The average high for August is 79° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Somerville. See also: September | October | November.
