S
M
T
W
T
F
S
27
36°
14°
28
33°
16°
29
35°
12°
30
35°
27°
31
41°
25°
1
49°
18°
2
43°
17°
3
33°
15°
4
33°
17°
5
36°
29°
6
44°
31°
7
48°
22°
8
50°
12°
9
46°
16°
10
28°
21°
11
36°
18°
12
37°
14°
13
32°
11°
14
31°
11°
15
32°
15°
16
31°
20°
17
40°
25°
18
39°
21°
19
48°
15°
20
42°
14°
21
31°
21°
22
38°
24°
23
44°
26°
24
45°
28°
25
45°
28°
26
48°
26°
27
48°
25°
28
45°
24°
29
45°
24°
30
43°
24°
31
Hist. Avg.
39°
19°
1
Hist. Avg.
39°
19°
2
Hist. Avg.
39°
19°
3
Hist. Avg.
40°
19°
4
Hist. Avg.
40°
20°
5
Hist. Avg.
40°
20°
6
Hist. Avg.
40°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Somerville
Somerville's January 2027 forecast shows daily high temperatures ranging from 28° to 50°, with overnight lows between 11° and 31°. The average high for January is 40° with an average low of 20°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in Somerville. See also: February | March | April.