December weather forecast
Webster, NY

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Weather in December

December, the first month of the winter in Webster, is also a wintry month, with an average temperature ranging between min 28.6°F (-1.9°C) and max 36.3°F (2.4°C).

Temperature

December comes with a decrease in the average high-temperature, falling from a chilly 45.9°F (7.7°C) in November to a wintry 36.3°F (2.4°C). Webster marks an average drop to a freezing cold 28.6°F (-1.9°C) during nighttime in December, following the high of the day.

Humidity

In Webster, the average relative humidity in December is 81%.

Rainfall

In Webster, in December, during 10.7 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 167.9 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Webster, in December, during 12.8 snowfall days, 4.37" (111mm) of snow is typically accumulated. In Webster, during the entire year, snow falls for 62.3 days and aggregates up to 20.63" (524mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:22 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:44 pm EST.

Sunshine

In December, the average sunshine is 3h.

UV index

The months with the lowest UV index in Webster are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Jul 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In December, the average high-temperature and low-temperature in Webster are 36.3°F (2.4°C) and 28.6°F (-1.9°C) respectively.

What is the average humidity in December?

The average relative humidity in December is 81%.

How many days does it rain in December?

In Webster, in December, during 10.7 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Webster, in December, during 12.8 snowfall days, 4.37" (111mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 0min of daylight.

What is the average length of the day in December?

In Webster, the average day length in December is 9h and 3min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:44 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 3h.

When is the lowest UV index?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in December?

In Webster, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's 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 December
Webster, NY

Average temperature in December - Webster, NY
  • Average high temperature in December: 36.3°F

The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in December
Webster, NY

Average pressure in December - Webster, NY
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Webster, NY

Average wind speed in December - Webster, NY
  • Average wind speed in December: 12.4mph

The windiest month (with the highest average wind speed) is January (13.2mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).

Average humidity in December
Webster, NY

Average humidity in December - Webster, NY
  • Average humidity in December: 81%

The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are August and September (75%).

Average rainfall in December
Webster, NY

Average rainfall in December - Webster, NY
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is October (3.23").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in December
Webster, NY

Average rainfall days in December - Webster, NY
  • Average rainfall days in December: 10.7 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (7.8 days).

Average snowfall in December
Webster, NY

Average snowfall in December - Webster, NY
  • Average snowfall in December: 4.37"

The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Webster, NY

Average snowfall days in December - Webster, NY
  • Average snowfall days in December: 12.8 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Webster, NY

Average daylight in December / Average sunshine in December - Webster, NY
  • Average daylight in December: 9h and 0min

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

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days in December
Webster, NY

Average sunshine days in December - Webster, NY
  • Average sunshine days in December: 8.1 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in December
Webster, NY

Average UV index in December - Webster, NY
  • Average UV index in December: 1

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Webster, NY

Average cloud cover in December - Webster, NY
  • Average cloud cover in December: 70

The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 27).

Average visibility in December
Webster, NY

Average visibility in December - Webster, NY
  • Average visibility in December: 6mi

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

Webster, New York, USA

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