S
M
T
W
T
F
S
27
84°
61°
28
86°
61°
29
91°
57°
30
93°
68°
1
93°
70°
2
84°
68°
3
75°
66°
4
79°
64°
5
84°
55°
6
84°
55°
7
88°
57°
8
90°
57°
9
90°
64°
10
73°
61°
11
88°
57°
12
91°
61°
13
91°
66°
14
88°
73°
15
91°
70°
16
73°
54°
17
66°
48°
18
72°
39°
19
73°
43°
20
79°
45°
21
81°
48°
22
81°
50°
23
79°
48°
24
81°
50°
25
77°
48°
26
77°
52°
27
77°
52°
28
82°
52°
29
81°
55°
30
81°
58°
31
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Somerville
Somerville's October 2026 forecast shows daily high temperatures ranging from 74° to 81°, with overnight lows between 58° and 60°. The average high for October is 78° with an average low of 59°. 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.