December weather forecast and climate
Hermon, NY

The first month of the winter, December, is also a subzero cold month in Hermon, New York, with average temperature fluctuating between 20.5°F (-6.4°C) and 30.4°F (-0.9°C).

Temperature

In December, the average high-temperature decreases, from a cold 42.3°F (5.7°C) in November, to a subzero cold 30.4°F (-0.9°C). The average low-temperature, in December, is 20.5°F (-6.4°C).

Humidity

In Hermon, the average relative humidity is 86%.

Rainfall

In Hermon, New York, during December, the rain falls for 4.6 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, in Hermon, there are 85.8 rainfall days, and 6.46" (164mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall in Hermon. In Hermon, in December, during 7.7 snowfall days, 0.87" (22mm) of snow is typically accumulated. In Hermon, during the entire year, snow falls for 42.4 days, and aggregates up to 5.24" (133mm) of snow.

Daylight

The month with the shortest days in Hermon is December, with an average of 8.9h of daylight.

Sunshine

The average sunshine in December is 2.9h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Hermon, New York. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Hermon?

In Hermon, New York, in December, the average high-temperature is 30.4°F (-0.9°C), and the average low-temperature is 20.5°F (-6.4°C).

What is the average humidity in December in Hermon?

In Hermon, the average relative humidity in December is 86%.

How many days does it rain in December in Hermon?

In Hermon, in December, it is raining for 4.6 days, with typically 0.47" (12mm) of accumulated precipitation.

How much does it snow in Hermon in December?

In December, in Hermon, it is snowing for 7.7 days. Throughout December, 0.87" (22mm) of snow is accumulated.

What is the month with the shortest days in Hermon?

The month with the shortest days in Hermon is December, with an average of 8.9h of daylight.

How many hours of daylight does Hermon have in December?

The average length of the day in December is 8.9h.

How many hours of sunshine does Hermon have in December?

In December, the average sunshine is 2.9h.

When is the lowest UV index in Hermon?

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 Hermon?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.
Average temperature in December - Hermon, NY
  • Average high temperature in December: 30.4°F

The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (24.1°F).

  • Average low temperature in December: 20.5°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

Average pressure in December - Hermon, NY
  • Average pressure in December: 30.04"

The month with the highest atmospheric pressure is November (30.07").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed in December - Hermon, NY
  • Average wind speed in December: 8.1mph

The windiest months (with the highest average wind speed) are February and April (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

Average humidity in December - Hermon, NY
  • Average humidity in December: 86%

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December - Hermon, NY
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is October (0.79").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in December - Hermon, NY
  • Average rainfall days in December: 4.6 days

The month with the highest number of rainy days is July (10.5 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in December - Hermon, NY
  • Average snowfall in December: 0.87"

The month with the highest snowfall is February (1.38").
Months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December - Hermon, NY
  • Average snowfall days in December: 7.7 days

The month with the highest number of snowfall days is January (11 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Hermon, NY
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 2.9h

The month with the most sunshine is July (Average sunshine: 10.1h).
Months with the least sunshine are January and February (Average sunshine: 2.7).

Average sunshine days in December - Hermon, NY
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (16.5 days).

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

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

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

Months with the most cloud cover are January and February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in December - Hermon, NY
  • Average visibility in December: 5mi

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