S
M
T
W
T
F
S
27
32°
19°
28
33°
17°
29
30°
7°
30
29°
14°
31
27°
3°
1
28°
-1°
2
20°
6°
3
20°
18°
4
31°
19°
5
33°
17°
6
34°
3°
7
32°
1°
8
20°
2°
9
19°
2°
10
28°
1°
11
21°
-2°
12
16°
0°
13
15°
-3°
14
19°
0°
15
17°
8°
16
20°
7°
17
25°
1°
18
21°
0°
19
20°
4°
20
21°
15°
21
29°
15°
22
30°
17°
23
34°
18°
24
33°
17°
25
33°
17°
26
32°
16°
27
34°
15°
28
33°
14°
29
31°
6°
30
25°
2°
31
Hist. Avg.
30°
10°
1
Hist. Avg.
30°
10°
2
Hist. Avg.
30°
10°
3
Hist. Avg.
30°
11°
4
Hist. Avg.
30°
11°
5
Hist. Avg.
31°
11°
6
Hist. Avg.
31°
11°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Jefferson
Jefferson's January 2027 forecast shows daily high temperatures ranging from 15° to 34°, with overnight lows between -3° and 19°. The average high for January is 26° 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 Jefferson. See also: February | March | April.