S
M
T
W
T
F
S
27
78°
52°
28
77°
44°
29
75°
44°
30
66°
48°
1
65°
46°
2
67°
50°
3
65°
45°
4
69°
46°
5
72°
52°
6
72°
51°
7
71°
51°
8
70°
48°
9
71°
45°
10
67°
39°
11
62°
46°
12
63°
39°
13
70°
37°
14
59°
38°
15
61°
45°
16
66°
43°
17
67°
40°
18
63°
43°
19
60°
37°
20
61°
36°
21
56°
36°
22
58°
37°
23
57°
36°
24
56°
35°
25
Hist. Avg.
62°
38°
26
Hist. Avg.
62°
38°
27
Hist. Avg.
62°
38°
28
Hist. Avg.
62°
38°
29
Hist. Avg.
61°
37°
30
Hist. Avg.
61°
37°
31
Hist. Avg.
61°
37°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Somerville
Somerville's October 2026 forecast shows daily high temperatures ranging from 56° to 78°, with overnight lows between 35° and 52°. The average high for October is 66° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Somerville. See also: November | December | January.