December weather forecast and climate
Allegany, NY

The first month of the winter, December, is still a cold month in Allegany, New York, with average temperature fluctuating between 33.8°F (1°C) and 23.9°F (-4.5°C).

Temperature

In December, the average high-temperature decreases, from a chilly 43.5°F (6.4°C) in November, to a wintry 33.8°F (1°C). The average low-temperature, in Allegany, is 23.9°F (-4.5°C).

Humidity

The average relative humidity is 88%.

Rainfall

In Allegany, New York, in December, during 8.9 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Allegany, during the entire year, the rain falls for 168.9 days and collects up to 30" (762mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Allegany, during December, snow falls for 18.8 days and regularly aggregates up to 9.25" (235mm) of snow. Throughout the year, there are 92.6 snowfall days, and 43.58" (1107mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9.2h of daylight.

Sunshine

In December, the average sunshine in Allegany, New York, is 2.5h.

UV index

Months with the lowest UV index in Allegany are January, February and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 1 in December 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Allegany?

The average high-temperature, in December, in Allegany, is 33.8°F (1°C), while the average low-temperature is 23.9°F (-4.5°C).

What is the average humidity in December in Allegany?

In Allegany, New York, the average relative humidity in December is 88%.

How many days does it rain in December in Allegany?

In Allegany, New York, in December, during 8.9 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

How many days does it snow in December in Allegany?

In December, it is snowing for 18.8 days. Throughout December, 9.25" (235mm) of snow is accumulated.

What is the month with the shortest days in Allegany?

With an average of 9.2h of daylight, December has the shortest days of the year in Allegany.

How many hours of daylight does Allegany have in December?

In Allegany, the average length of the day in December is 9.2h.

How long on average sun shines in December in Allegany?

In Allegany, the average sunshine in December is 2.5h.

When is the lowest UV index in Allegany?

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

How high is the UV index in December in Allegany?

The average daily maximum UV index in December in Allegany, New York, is 1. A UV Index value of 2, and less, symbolizes a low health threat from unprotected exposure to the UV radiation.
Average temperature in December - Allegany, NY
  • Average high temperature in December: 33.8°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in December - Allegany, NY
  • Average pressure in December: 30.08"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.94").

Average wind speed in December - Allegany, NY
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in December - Allegany, NY
  • Average humidity in December: 88%

Months with the highest relative humidity are January and February (89%).
Months with the lowest relative humidity are May, June and July (79%).

Average rainfall in December - Allegany, NY
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in December - Allegany, NY
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in December - Allegany, NY
  • Average snowfall in December: 9.25"

The month with the highest snowfall is February (10.63").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in December - Allegany, NY
  • Average snowfall days in December: 18.8 days

The month with the highest number of snowfall days is January (20.2 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Allegany, NY
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 2.5h

The month with the most sunshine is July (Average sunshine: 9.4h).
The month with the least sunshine is January (Average sunshine: 2.3h).

Average sunshine days in December - Allegany, NY
  • Average sunshine days in December: 7.8 days

The month with the most sunshine days is September (12.4 days).
The month with the least sunshine days is February (5.9 days).

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

Months with the highest UV index are May, June, July and August (UV index 5).
Months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in December - Allegany, NY
  • Average cloud cover in December: 77

The month with the most cloud cover is January (Cloud cover 79).
Months with the least cloud cover are July and August (Cloud cover 43).

Average visibility in December - Allegany, NY
  • Average visibility in December: 4mi

Months with the highest visibility are March, April, May, June, July, October and November (5mi).
Months with the lowest visibility are January, February, August, September and December (4mi).