January weather forecast
Riverton, NJ

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Weather in January

January, like December, in Riverton, New Jersey, is an icy winter month, with an average temperature fluctuating between 25.2°F (-3.8°C) and 37.4°F (3°C).

Temperature

January is the month that records the lowest temperatures, with averages ranging from a high of 37.4°F (3°C) to a low of 25.2°F (-3.8°C).

Humidity

The average relative humidity in January in Riverton is 74%.

Rainfall

January is the month with the least rainfall. Rain falls for 7.9 days and accumulates 1.89" (48mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Riverton. In Riverton, during January, snow falls for 5.2 days and regularly aggregates up to 1.61" (41mm) of snow. Throughout the year, in Riverton, there are 16.8 snowfall days, and 8.5" (216mm) of snow is accumulated.

Daylight

In January, the average length of the day is 9h and 43min.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:45 pm. On the last day of January, in Riverton, New Jersey, sunrise is at 7:09 am and sunset at 5:17 pm EST.

Sunshine

The average sunshine in January is 5h.

UV index

The months with the lowest UV index in Riverton are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 2 in January transforms into this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

What part of the year is the coldest in Riverton?

January, with its high-temperature average of 37.4°F (3°C) and a low-temperature average of 25.2°F (-3.8°C), is the coldest month in Riverton.

How cold is it in Riverton in January?

In January, the average high-temperature and low-temperature in Riverton, New Jersey, are 37.4°F (3°C) and 25.2°F (-3.8°C) respectively.

What is the average humidity in January in Riverton?

The average relative humidity in January is 74%.

What is the driest month in Riverton?

The month with the least rainfall in Riverton is January, when the rain falls for 7.9 days and typically collects 1.89" (48mm) of precipitation.

How many days does it rain in January in Riverton?

In Riverton, in January, during 7.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

How much does it snow in Riverton in January?

In Riverton, in January, snow falls for 5.2 days, with typically accumulated 1.61" (41mm) of snow.

What is the average length of the day in January in Riverton?

In Riverton, New Jersey, the average day length in January is 9h and 43min.

When are sunrise and sunset in January in Riverton?

On the first day of January in Riverton, sunrise is at 7:21 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:17 pm EST.

How long on average sun shines in January in Riverton?

In January, the average sunshine duration is 5h.

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

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

What is the UV index reading in January in Riverton?

In Riverton, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
Average high temperature
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
Riverton, NJ

Average temperature in January - Riverton, NJ
  • Average high temperature in January: 37.4°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in January: 25.2°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in January
Riverton, NJ

Average pressure in January - Riverton, 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 (29.93"Hg).

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Average wind speed in January
Riverton, NJ

Average wind speed in January - Riverton, NJ
  • Average wind speed in January: 8.2mph

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in January
Riverton, NJ

Average humidity in January - Riverton, NJ
  • Average humidity in January: 74%

The months with the highest relative humidity are February and October (77%).
The months with the lowest relative humidity are April, July and August (71%).

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Average rainfall in January
Riverton, NJ

Average rainfall in January - Riverton, NJ
  • Average rainfall in January: 1.89"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.89").

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Average rainfall days in January
Riverton, NJ

Average rainfall days in January - Riverton, NJ
  • Average rainfall days in January: 7.9 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in January
Riverton, NJ

Average snowfall in January - Riverton, NJ
  • Average snowfall in January: 1.61"

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Riverton, NJ

Average snowfall days in January - Riverton, NJ
  • Average snowfall days in January: 5.2 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Riverton, 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 24min).

  • Average sunshine in January: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in January
Riverton, NJ

Average sunshine days in January - Riverton, NJ
  • Average sunshine days in January: 19.5 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (10.4 days).

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Average UV index in January
Riverton, NJ

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

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

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Average cloud cover in January
Riverton, NJ

Average cloud cover in January - Riverton, NJ
  • Average cloud cover in January: 45

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
Riverton, NJ

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

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

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Riverton, New Jersey, USA

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