December weather forecast and climate
Guilderland Center, NY

The first month of the winter, December, is also a wintry month in Guilderland Center, New York, with average temperature ranging between max 34.7°F (1.5°C) and min 24.4°F (-4.2°C).

Temperature

In December, the average high-temperature drops, from a frosty 45.5°F (7.5°C) in November, to a cold 34.7°F (1.5°C). In Guilderland Center, New York, the average low-temperature is 24.4°F (-4.2°C).

Humidity

In December, the average relative humidity in Guilderland Center, New York, is 81%.

Rainfall

In Guilderland Center, in December, it is raining for 11.5 days, with typically 2.8" (71mm) of accumulated precipitation. In Guilderland Center, during the entire year, the rain falls for 160.4 days and collects up to 32.44" (824mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Guilderland Center, snow falls for 8.6 days, with typically accumulated 6.81" (173mm) of snow. In Guilderland Center, during the entire year, snow falls for 51.2 days, and aggregates up to 32.09" (815mm) of snow.

Daylight

December has the shortest days of the year in Guilderland Center, New York, with an average of 9.1h of daylight.

Sunshine

The average sunshine in December is 4.3h.

UV index

December is the month with the lowest UV index in Guilderland Center, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. 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 temperature in December in Guilderland Center?

In December, the average high-temperature is 34.7°F (1.5°C), and the average low-temperature is 24.4°F (-4.2°C).

What is the average humidity in December in Guilderland Center?

The average relative humidity in December in Guilderland Center is 81%.

How many days does it rain in December in Guilderland Center?

In Guilderland Center, New York, in December, it is raining for 11.5 days, with typically 2.8" (71mm) of accumulated precipitation.

How much does it snow in Guilderland Center in December?

In December, in Guilderland Center, New York, it is snowing for 8.6 days. Throughout December, 6.81" (173mm) of snow is accumulated.

What is the month with the shortest days in Guilderland Center?

The month with the shortest days in Guilderland Center is December, with an average of 9.1h of daylight.

How many hours of daylight does Guilderland Center have in December?

In December, the average length of the day in Guilderland Center, New York, is 9.1h.

How long on average sun shines in December in Guilderland Center?

In December, the average sunshine in Guilderland Center, New York, is 4.3h.

What is the month with the lowest UV index in Guilderland Center?

The month with the lowest UV index in Guilderland Center is December, with an average maximum UV index of 1.

How high is the UV index in December in Guilderland Center?

In Guilderland Center, New York, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays.
Average temperature in December - Guilderland Center, NY
  • Average high temperature in December: 34.7°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in December: 24.4°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in December - Guilderland Center, NY
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.92").

Average wind speed in December - Guilderland Center, NY
  • Average wind speed in December: 7.6mph

The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December - Guilderland Center, NY
  • Average humidity in December: 81%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (74%).

Average rainfall in December - Guilderland Center, NY
  • Average rainfall in December: 2.8"

The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in December - Guilderland Center, NY
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in December - Guilderland Center, NY
  • Average snowfall in December: 6.81"

The month with the highest snowfall is January (8.15").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - Guilderland Center, NY
  • Average snowfall days in December: 8.6 days

The month with the highest number of snowfall days is January (13.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Guilderland Center, NY
  • Average daylight in December: 9.1h

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in December: 4.3h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 3.8h).

Average sunshine days in December - Guilderland Center, NY
  • Average sunshine days in December: 14.1 days

The month with the most sunshine days is September (16.7 days).
Months with the least sunshine days are February and April (11.3 days).

Average UV index in December - Guilderland Center, NY
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December - Guilderland Center, NY
  • Average cloud cover in December: 54

The month with the most cloud cover is February (Cloud cover 58).
Months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in December - Guilderland Center, NY
  • Average visibility in December: 6mi

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