January weather forecast
Stewartsville, NJ

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Weather in January

January, the same as December, is an icy winter month in Stewartsville, New Jersey, with an average temperature varying between 34.3°F (1.3°C) and 21.6°F (-5.8°C).

Temperature

January, with average temperatures reaching a high of 34.3°F (1.3°C) and a low of 21.6°F (-5.8°C), is the coldest month.

Humidity

The average relative humidity in January in Stewartsville, New Jersey, is 78%.

Rainfall

In January, the rain falls for 7.1 days. Throughout January, 0.87" (22mm) of precipitation is accumulated. In Stewartsville, New Jersey, during the entire year, the rain falls for 124.4 days and collects up to 13.39" (340mm) of precipitation.

Snowfall

Months with snowfall in Stewartsville are January through April, November and December. In January, in Stewartsville, it is snowing for 6.7 days. Throughout January, 1.22" (31mm) of snow is accumulated. In Stewartsville, during the entire year, snow falls for 22 days and aggregates up to 5" (127mm) of snow.

Daylight

The average length of the day in January is 9h and 39min.
On the first day of January, sunrise is at 7:24 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:16 pm EST.

Sunshine

In January, the average sunshine in Stewartsville is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 2 during January translates into the following directions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months in Stewartsville?

January, with average temperatures reaching a high of 34.3°F (1.3°C) and a low of 21.6°F (-5.8°C), is the coldest month in Stewartsville, New Jersey.

How cold is January in Stewartsville?

In Stewartsville, 34.3°F (1.3°C) is the average high-temperature and 21.6°F (-5.8°C) is the average low-temperature during January.

What is the average humidity in January in Stewartsville?

The average relative humidity in January in Stewartsville, New Jersey, is 78%.

How much does it rain in Stewartsville in January?

In Stewartsville, in January, it is raining for 7.1 days, with typically 0.87" (22mm) of accumulated precipitation.

How much does it snow in Stewartsville in January?

In Stewartsville, New Jersey, during January, snow falls for 6.7 days and regularly aggregates up to 1.22" (31mm) of snow.

How many hours of daylight does Stewartsville have in January?

In January, the average day length in Stewartsville, New Jersey, is 9h and 39min.

When is the sunrise / sunset in January in Stewartsville?

On the first day of January in Stewartsville, sunrise is at 7:24 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:16 pm EST.

How long on average sun shines in January in Stewartsville?

In Stewartsville, the average sunshine duration in January is 4.9h.

What are the months with the lowest UV index in Stewartsville?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Stewartsville.

What is the UV index intensity in January in Stewartsville?

The average daily maximum UV index in January in Stewartsville is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Stewartsville, NJ

Average temperature in January - Stewartsville, NJ
  • Average high temperature in January: 34.3°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in January
Stewartsville, NJ

Average pressure in January - Stewartsville, NJ
  • Average pressure in January: 30.08"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in January
Stewartsville, NJ

Average wind speed in January - Stewartsville, NJ
  • Average wind speed in January: 8mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

Average humidity in January
Stewartsville, NJ

Average humidity in January - Stewartsville, NJ
  • Average humidity in January: 78%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in January
Stewartsville, NJ

Average rainfall in January - Stewartsville, NJ
  • Average rainfall in January: 0.87"

The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is September (0.71").

Average rainfall days in January
Stewartsville, NJ

Average rainfall days in January - Stewartsville, NJ
  • Average rainfall days in January: 7.1 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in January
Stewartsville, NJ

Average snowfall in January - Stewartsville, NJ
  • Average snowfall in January: 1.22"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in January
Stewartsville, NJ

Average snowfall days in January - Stewartsville, NJ
  • Average snowfall days in January: 6.7 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in January /
Average sunshine in January
Stewartsville, NJ

Average daylight in January / Average sunshine in January - Stewartsville, NJ
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in January
Stewartsville, NJ

Average sunshine days in January - Stewartsville, NJ
  • Average sunshine days in January: 20.1 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (14 days).

Average UV index in January
Stewartsville, NJ

Average UV index in January - Stewartsville, NJ
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in January
Stewartsville, NJ

Average cloud cover in January - Stewartsville, NJ
  • Average cloud cover in January: 46

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in January
Stewartsville, NJ

Average visibility in January - Stewartsville, NJ
  • Average visibility in January: 6mi

The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).

Stewartsville, New Jersey, USA

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