December weather forecast
Montrose, NJ

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Weather in December

The first month of the winter, December, is still a chilly month in Montrose, New Jersey, with an average temperature varying between 43.9°F (6.6°C) and 34.5°F (1.4°C).

Temperature

December signals a slight drop in average high-temperature, sliding from November's cool 52.2°F (11.2°C) to a chilly 43.9°F (6.6°C). During the month of December, the temperature falls to an average of 34.5°F (1.4°C).

Humidity

In Montrose, the average relative humidity in December is 76%.

Rainfall

In December, the rain falls for 4.9 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. In Montrose, during the entire year, the rain falls for 68.3 days and collects up to 5.75" (146mm) of precipitation.

Snowfall

Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 1.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Montrose, there are 8.7 snowfall days, and 0.43" (11mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:40 pm EST.

Sunshine

The average sunshine in December is 5.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

December temperatures vary between a high-temperature of 43.9°F (6.6°C) and a low-temperature of 34.5°F (1.4°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in July is estimated at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 76%.

How much does it rain in December?

In December, in Montrose, New Jersey, the rain falls for 4.9 days. Throughout December, 0.67" (17mm) of precipitation is accumulated.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 1.1 snowfall days, it receives 0.08" (2mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

How many hours of daylight does Montrose have in December?

In Montrose, the average day length in December is 9h and 22min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:40 pm EST.

How many hours of sunshine does Montrose have in December?

In December, the average sunshine duration is 5.1h.

What are the months with the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Montrose, NJ

Average temperature in December - Montrose, NJ
  • Average high temperature in December: 43.9°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in December
Montrose, NJ

Average pressure in December - Montrose, NJ
  • Average pressure in December: 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).

Average wind speed in December
Montrose, NJ

Average wind speed in December - Montrose, NJ
  • Average wind speed in December: 10.4mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

Average humidity in December
Montrose, NJ

Average humidity in December - Montrose, NJ
  • Average humidity in December: 76%

The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (73%).

Average rainfall in December
Montrose, NJ

Average rainfall in December - Montrose, NJ
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is July (0.71").
The driest month (with the least rainfall) is September (0.12").

Average rainfall days in December
Montrose, NJ

Average rainfall days in December - Montrose, NJ
  • Average rainfall days in December: 4.9 days

The month with the highest number of rainy days is July (8 days).
The month with the least rainy days is January (3.4 days).

Average snowfall in December
Montrose, NJ

Average snowfall in December - Montrose, NJ
  • Average snowfall in December: 0.08"

The month with the highest snowfall is January (0.16").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December
Montrose, NJ

Average snowfall days in December - Montrose, NJ
  • Average snowfall days in December: 1.1 days

The month with the highest number of snowfall days is February (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
Montrose, NJ

Average daylight in December / Average sunshine in December - Montrose, NJ
  • Average daylight in December: 9h and 2min

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 December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Montrose, NJ

Average sunshine days in December - Montrose, NJ
  • Average sunshine days in December: 24.5 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is July (17.3 days).

Average UV index in December
Montrose, NJ

Average UV index in December - Montrose, NJ
  • Average UV index in December: 2

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

Average cloud cover in December
Montrose, NJ

Average cloud cover in December - Montrose, NJ
  • Average cloud cover in December: 46

The months with the most cloud cover are February, March and December (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in December
Montrose, NJ

Average visibility in December - Montrose, NJ
  • Average visibility in December: 6mi

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

Montrose, New Jersey, USA

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