S
M
T
W
T
F
S
27
62°
32°
28
58°
33°
29
60°
40°
30
61°
39°
31
59°
38°
1
60°
42°
2
57°
45°
3
65°
39°
4
64°
31°
5
58°
32°
6
57°
43°
7
60°
46°
8
67°
47°
9
69°
43°
10
69°
39°
11
63°
34°
12
56°
31°
13
59°
30°
14
56°
33°
15
55°
38°
16
61°
35°
17
64°
36°
18
62°
42°
19
61°
44°
20
61°
44°
21
Hist. Avg.
63°
40°
22
Hist. Avg.
63°
40°
23
Hist. Avg.
64°
40°
24
Hist. Avg.
64°
40°
25
Hist. Avg.
64°
40°
26
Hist. Avg.
64°
40°
27
Hist. Avg.
64°
40°
28
Hist. Avg.
64°
40°
29
Hist. Avg.
64°
40°
30
Hist. Avg.
65°
40°
31
Hist. Avg.
65°
41°
1
Hist. Avg.
65°
41°
2
Hist. Avg.
65°
41°
3
Hist. Avg.
65°
41°
4
Hist. Avg.
66°
41°
5
Hist. Avg.
66°
41°
6
Hist. Avg.
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Boston
Boston's January 2027 forecast shows daily high temperatures ranging from 55° to 69°, with overnight lows between 30° and 47°. The average high for January is 61° with an average low of 38°. 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 Boston. See also: February | March | April.
