S
M
T
W
T
F
S
27
34°
15°
28
27°
15°
29
31°
16°
30
28°
16°
31
30°
23°
1
40°
22°
2
40°
16°
3
41°
14°
4
32°
17°
5
29°
21°
6
38°
22°
7
39°
25°
8
42°
6°
9
43°
6°
10
40°
19°
11
35°
10°
12
37°
7°
13
27°
7°
14
24°
1°
15
22°
5°
16
20°
16°
17
29°
16°
18
31°
19°
19
41°
7°
20
40°
7°
21
25°
13°
22
25°
18°
23
35°
19°
24
37°
20°
25
36°
19°
26
37°
21°
27
37°
21°
28
38°
19°
29
42°
20°
30
40°
20°
31
Hist. Avg.
30°
9°
1
Hist. Avg.
30°
10°
2
Hist. Avg.
30°
10°
3
Hist. Avg.
30°
10°
4
Hist. Avg.
30°
10°
5
Hist. Avg.
30°
10°
6
Hist. Avg.
30°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Bar Harbor
Bar Harbor's January 2027 forecast shows daily high temperatures ranging from 20° to 43°, with overnight lows between 1° and 25°. The average high for January is 34° with an average low of 15°. 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 Bar Harbor. See also: February | March | April.