S
M
T
W
T
F
S
27
63°
38°
28
65°
40°
29
64°
47°
30
67°
42°
31
69°
39°
1
68°
39°
2
65°
40°
3
65°
38°
4
64°
37°
5
63°
37°
6
63°
38°
7
64°
37°
8
63°
38°
9
64°
40°
10
67°
40°
11
68°
41°
12
68°
41°
13
69°
43°
14
68°
42°
15
69°
45°
16
67°
42°
17
68°
45°
18
67°
41°
19
64°
44°
20
63°
43°
21
Hist. Avg.
68°
44°
22
Hist. Avg.
68°
44°
23
Hist. Avg.
68°
44°
24
Hist. Avg.
68°
44°
25
Hist. Avg.
68°
44°
26
Hist. Avg.
68°
44°
27
Hist. Avg.
68°
44°
28
Hist. Avg.
68°
44°
29
Hist. Avg.
68°
44°
30
Hist. Avg.
68°
44°
31
Hist. Avg.
68°
44°
1
Hist. Avg.
68°
44°
2
Hist. Avg.
67°
44°
3
Hist. Avg.
67°
44°
4
Hist. Avg.
67°
44°
5
Hist. Avg.
67°
44°
6
Hist. Avg.
67°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Montclair
Montclair's January 2027 forecast shows daily high temperatures ranging from 63° to 69°, with overnight lows between 37° and 47°. The average high for January is 66° with an average low of 41°. 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 Montclair. See also: February | March | April.