S
M
T
W
T
F
S
27
24°
8°
28
33°
5°
29
28°
0°
30
29°
-1°
31
14°
0°
1
13°
2°
2
15°
3°
3
18°
16°
4
22°
2°
5
31°
-2°
6
17°
1°
7
17°
3°
8
16°
16°
9
22°
4°
10
26°
2°
11
19°
1°
12
19°
-2°
13
18°
-5°
14
13°
-6°
15
11°
-4°
16
12°
-3°
17
14°
0°
18
16°
13°
19
21°
13°
20
27°
5°
21
27°
10°
22
26°
6°
23
26°
-1°
24
17°
-1°
25
15°
-2°
26
16°
0°
27
16°
0°
28
17°
11°
29
17°
6°
30
20°
-2°
31
18°
3°
1
17°
11°
2
23°
12°
3
23°
13°
4
29°
10°
5
31°
14°
6
18°
-1°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Duluth
Duluth's January 2027 forecast shows daily high temperatures ranging from 11° to 33°, with overnight lows between -6° and 16°. The average high for January is 20° with an average low of 4°. 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 Duluth. See also: February | March | April.