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Hourly
7 Days
14 Days
Monthly
°C
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Monthly Historical Averages
Jefferson, NJ
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Daily Historical Averages
January 2026
S
M
T
W
T
F
S
1
0°
2
2°
3
0°
4
2°
5
2°
6
5°
7
6°
8
6°
9
9°
10
9°
11
6°
12
4°
13
4°
14
6°
15
6°
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Thursday, January 1, 2026
Day
0°
Feels -5
Wind
43 km/h NW
Gust
65 km/h
Humidity
46%
P.O.P
40%
Snow
<1 cm
Night
-3°
Feels -8
Wind
16 km/h NW
Gust
23 km/h
Humidity
67%
P.O.P
30%
Historical Averages
Jan 1
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
January
Average Temperature
High
5°
Feels 2
Low
-1°
Feels -5
Average Precipitation
9 Days
Rain amount
39.8mm
Snow amount
6.2cm