S
M
T
W
T
F
S
26
58°
46°
27
59°
46°
28
58°
47°
29
58°
48°
30
59°
48°
31
58°
47°
1
61°
45°
2
62°
46°
3
58°
47°
4
60°
45°
5
61°
46°
6
59°
44°
7
59°
45°
8
60°
46°
9
59°
46°
10
61°
49°
11
60°
49°
12
60°
46°
13
61°
45°
14
60°
46°
15
60°
45°
16
61°
47°
17
60°
46°
18
60°
47°
19
61°
46°
20
62°
48°
21
63°
49°
22
61°
46°
23
Hist. Avg.
59°
42°
24
Hist. Avg.
59°
42°
25
Hist. Avg.
59°
42°
26
Hist. Avg.
59°
42°
27
Hist. Avg.
59°
42°
28
Hist. Avg.
59°
42°
29
Hist. Avg.
59°
42°
30
Hist. Avg.
59°
42°
31
Hist. Avg.
59°
42°
1
Hist. Avg.
59°
42°
2
Hist. Avg.
60°
42°
3
Hist. Avg.
60°
42°
4
Hist. Avg.
60°
42°
5
Hist. Avg.
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Somerville
Somerville's August 2026 forecast shows daily high temperatures ranging from 58° to 63°, with overnight lows between 44° and 49°. The average high for August is 60° with an average low of 46°. 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.
