Normal weather for New Jersey in January
It's cold in January in New Jersey with an average temperature of 6°C. Temperatures this month range from a low of 2°C to a high of 13°C. At night, you can expect temperatures between -10°C and 1°C.
In January, there is an average of 90 mm of precipitation, spread over 13 days. Of the total precipitation, about 18 cm falls as snow in January. The wind speed is around 4 Bft, mostly coming from the Southwest.
New Jersey in January |
New York | ||
|---|---|---|---|
 Average Temperature |
6°C | 5°C | |
 High Temp |
13°C | 11°C | |
| Low Temp |
2°C | 1°C | |
 Total Precipitation |
90 mm | 97 mm | |
| Rainy Days |
13 days | 12 days | |
 Total Snowfall |
18 cm | 16 cm | |
| Snowy Days |
6 days | 8 days | |
Start of January
The month of January starts in New Jersey with cold temps, averaging around 6°C during the day and nights around -3°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
With the temperature difference between day and night, it’s smart to wear layers. During the day, wear a thick jacket, sweater, and long pants. For the evening and morning, we recommend a heavy winter coat, sweater, long pants, beanie, and gloves.
Mid January
By mid-January, daytime temps rise to around 8°C, with nights around -2°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
Since it cools down at night, it’s a good idea to wear layers. During the day, wear a thick jacket, sweater, and long pants. For the evening and morning, we recommend a heavy winter coat, sweater, long pants, beanie, and gloves.
End of January
By the end of January, the average daytime temperature in New Jersey is around 6°C, while nighttime temps are about -4°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended. During the day, wear a thick jacket, sweater, and long pants. For the evening and morning, we recommend a heavy winter coat, sweater, long pants, beanie, and gloves.
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UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Temperature records for New Jersey in January
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Daily Temperature in January in New Jersey
This chart shows the average daily high and low temperatures in January for New Jersey, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in January in New Jersey
The chart below shows the average daily precipitation in January for New Jersey, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for January, you can expect about 13 days of precipitation in New Jersey.
Daily Snowfall in January in New Jersey
This chart shows the average daily snowfall in January in New Jersey, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in January.
Daily UV Index in January in New Jersey
This chart shows the average daily UV index in January in New Jersey, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in New Jersey Over the Years
This chart shows the average temperature in January in New Jersey, measured in degrees Celsius, over the past few years.
Total Precipitation in January in New Jersey Over the Years
This chart shows the average precipitation in January in New Jersey, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in January in New Jersey per year
This chart shows the average snowfall in January in New Jersey, measured in centimeters, over the past few years.
Daily Climate in January for New Jersey
Click on any day in January to get detailed info about the usual weather on that day in New Jersey. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in New Jersey
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Average Weather in New Jersey by Month
Click on a month below to see detailed weather info for New Jersey. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of New Jersey for all months at once
