January weather forecast and climate
Pennington, NJ

January, the same as December, is another cold winter month in Pennington, New Jersey, with average temperature ranging between max 36.9°F (2.7°C) and min 24.3°F (-4.3°C).

Temperature

With an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 24.3°F (-4.3°C), January is the coldest month.

Humidity

In Pennington, the average relative humidity is 75%.

Rainfall

The month with the least rainfall is January when the rain falls for 8.1 days and typically collects 0.87" (22mm) of precipitation.

Snowfall

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

Daylight

In Pennington, New Jersey, the average length of the day is 9.7h.

Sunshine

In January, the average sunshine is 5.1h.

UV index

Months with the lowest UV index in Pennington are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Pennington?

The coldest month in Pennington, New Jersey, is January, with an average high-temperature of 36.9°F (2.7°C) and an average low-temperature of 24.3°F (-4.3°C).

What is the temperature in January in Pennington?

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

What is the average humidity in January in Pennington?

In Pennington, New Jersey, the average relative humidity in January is 75%.

How much does it rain in Pennington in January?

In Pennington, New Jersey, in January, during 8.1 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

What is the driest month in Pennington?

The month with the least rainfall is January when the rain falls for 8.1 days and typically collects 0.87" (22mm) of precipitation.

How much does it snow in Pennington in January?

In Pennington, in January, snow falls for 4.6 days, with typically accumulated 0.43" (11mm) of snow.

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

The average length of the day in January in Pennington is 9.7h.

How many hours of sunshine does Pennington have in January?

The average sunshine in January in Pennington is 5.1h.

When is the lowest UV index in Pennington?

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 intensity 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 risk from unprotected exposure to the UV radiation.
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).

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

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

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).

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

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

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").

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).

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

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

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).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January / Average sunshine in January - Pennington, NJ
  • Average daylight in January: 9.7h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in January: 5.1h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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).

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

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

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

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).

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

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).