S
M
T
W
T
F
S
27
35°
18°
28
35°
17°
29
34°
23°
30
34°
20°
31
35°
16°
1
36°
12°
2
33°
13°
3
30°
21°
4
34°
30°
5
38°
29°
6
42°
17°
7
43°
14°
8
34°
15°
9
31°
16°
10
34°
13°
11
34°
12°
12
29°
11°
13
27°
12°
14
32°
12°
15
30°
13°
16
32°
16°
17
34°
15°
18
32°
13°
19
31°
14°
20
30°
16°
21
34°
23°
22
35°
29°
23
41°
28°
24
42°
27°
25
40°
25°
26
39°
27°
27
40°
27°
28
41°
25°
29
39°
20°
30
35°
17°
31
36°
17°
1
Hist. Avg.
41°
22°
2
Hist. Avg.
41°
22°
3
Hist. Avg.
42°
23°
4
Hist. Avg.
42°
23°
5
Hist. Avg.
42°
23°
6
Hist. Avg.
42°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Brussels
Brussels's January 2027 forecast shows daily high temperatures ranging from 27° to 43°, with overnight lows between 11° and 30°. The average high for January is 35° with an average low of 19°. 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 Brussels. See also: February | March | April.