January weather forecast
Pennington, NJ

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Weather in January

January, like December, in Pennington, New Jersey, is another cold winter month, with an average temperature varying between 24.3°F (-4.3°C) and 36.9°F (2.7°C).

Temperature

January brings the lowest temperatures, with an average high of 36.9°F (2.7°C) and an average low of 24.3°F (-4.3°C).

Humidity

In January, the average relative humidity is 75%.

Rainfall

January is the month with the least rainfall in Pennington, New Jersey. Rain falls for 8.1 days and accumulates 0.87" (22mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In Pennington, in January, during 4.6 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Pennington, during the entire year, snow falls for 15.6 days and aggregates up to 2.8" (71mm) of snow.

Daylight

The average length of the day in January in Pennington is 9h and 41min.
On the first day of January in Pennington, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:15 pm EST.

Sunshine

In Pennington, the average sunshine in January is 5.1h.

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 reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 during January translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What time of the year is the coldest in Pennington?

In Pennington, January is known for its average lowest temperatures, reaching a high of 36.9°F (2.7°C) and a low of 24.3°F (-4.3°C).

How cold is January in Pennington?

The average high-temperature, in January, in Pennington, is 36.9°F (2.7°C), while the average low-temperature is 24.3°F (-4.3°C).

What is the average humidity in January in Pennington?

The average relative humidity in January is 75%.

What is the driest month in Pennington?

January is the month with the least rainfall in Pennington. Rain falls for 8.1 days and accumulates 0.87" (22mm) of precipitation.

How many days does it rain in January in Pennington?

In Pennington, New Jersey, during January, the rain falls for 8.1 days and regularly aggregates up to 0.87" (22mm) of precipitation.

How many days does it snow in January in Pennington?

In January, in Pennington, it is snowing for 4.6 days. Throughout January, 0.43" (11mm) of snow is accumulated.

How many hours of daylight does Pennington have in January?

In Pennington, the average day length in January is 9h and 41min.

What time are sunrise and sunset in January in Pennington?

On the first day of January, sunrise is at 7:21 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 5:15 pm EST.

How long on average sun shines in January in Pennington?

In January, the average sunshine duration in Pennington is 5.1h.

When is the lowest UV index in Pennington?

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

What is the UV index reading in January in Pennington?

In Pennington, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
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
Pennington, NJ

Average temperature in January - Pennington, NJ
  • Average high temperature in January: 36.9°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in January: 24.3°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in January
Pennington, NJ

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Pennington, NJ

Average wind speed in January - Pennington, NJ
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Pennington, NJ

Average humidity in January - Pennington, NJ
  • Average humidity in January: 75%

The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April and July (73%).

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Average rainfall in January
Pennington, NJ

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

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in January
Pennington, NJ

Average rainfall days in January - Pennington, NJ
  • Average rainfall days in January: 8.1 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is November (7.2 days).

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Average snowfall in January
Pennington, NJ

Average snowfall in January - Pennington, NJ
  • Average snowfall in January: 0.43"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Pennington, NJ

Average snowfall days in January - Pennington, NJ
  • Average snowfall days in January: 4.6 days

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Pennington, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in January
Pennington, NJ

Average sunshine days in January - Pennington, NJ
  • Average sunshine days in January: 20.7 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in January
Pennington, NJ

Average UV index in January - Pennington, 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
Pennington, NJ

Average cloud cover in January - Pennington, NJ
  • Average cloud cover in January: 44

The months with the most cloud cover are February and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in January
Pennington, NJ

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

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

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Pennington, New Jersey, USA

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