S
M
T
W
T
F
S
27
27°
4°
28
22°
5°
29
26°
4°
30
24°
9°
31
26°
18°
1
37°
15°
2
37°
8°
3
32°
3°
4
22°
5°
5
26°
14°
6
32°
17°
7
36°
15°
8
39°
1°
9
40°
2°
10
19°
11°
11
26°
5°
12
28°
5°
13
23°
1°
14
24°
-4°
15
20°
1°
16
18°
8°
17
25°
10°
18
27°
11°
19
37°
0°
20
36°
0°
21
17°
8°
22
23°
12°
23
32°
13°
24
35°
14°
25
34°
14°
26
35°
13°
27
35°
15°
28
36°
13°
29
40°
13°
30
34°
11°
31
22°
5°
1
38°
-1°
2
Hist. Avg.
30°
6°
3
Hist. Avg.
30°
6°
4
Hist. Avg.
30°
6°
5
Hist. Avg.
30°
6°
6
Hist. Avg.
31°
6°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Danbury
Danbury's January 2027 forecast shows daily high temperatures ranging from 17° to 40°, with overnight lows between -4° and 18°. The average high for January is 29° with an average low of 8°. 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 Danbury. See also: February | March | April.