December weather forecast
Harris, NY

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Weather in December

December, the first month of the winter in Harris, is also an icy month, with temperature in the range of an average high of 35.6°F (2°C) and an average low of 23.9°F (-4.5°C).

Temperature

Harris's average high-temperature decreases in December, falling from a chilly 45.3°F (7.4°C) in November to a wintry 35.6°F (2°C). Nighttime temperatures consistently average a freezing cold 23.9°F (-4.5°C) during December.

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 85%.

Rainfall

In Harris, in December, it is raining for 9.8 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, there are 153.7 rainfall days, and 26.73" (679mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 8.1 days and typically aggregates up to 5.04" (128mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:38 pm EST.

Sunshine

In December, the average sunshine in Harris is 4.3h.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Frequently asked questions

How cold is December?

In December, the average high-temperature and low-temperature in Harris are 35.6°F (2°C) and 23.9°F (-4.5°C) respectively. In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 86°F (30°C).

What is the most humid month?

The months with the highest humidity are February and December, with an average relative humidity of 85%.

What is the average humidity in December?

In December, the average relative humidity is 85%.

How many days does it rain in December?

In Harris, during December, the rain falls for 9.8 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When does it snow the most in Harris?

The month with the most snowfall is December, when snow falls for 8.1 days and typically aggregates up to 5.04" (128mm) of snow.

How much does it snow in December?

In Harris, in December, snow falls for 8.1 days, with typically accumulated 5.04" (128mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December?

In Harris, New York, the average day length in December is 9h and 13min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:38 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.3h.

What are the months with the lowest UV index?

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December?

In Harris, the average daily maximum UV index in December is 2. A UV Index value 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
Harris, NY

Average temperature in December - Harris, NY
  • Average high temperature in December: 35.6°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 (29.8°F).

  • Average low temperature in December: 23.9°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Harris, NY

Average pressure in December - Harris, NY
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Harris, NY

Average wind speed in December - Harris, NY
  • Average wind speed in December: 7.1mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Harris, NY

Average humidity in December - Harris, NY
  • Average humidity in December: 85%

The months with the highest relative humidity are February and December (85%).
The month with the lowest relative humidity is July (77%).

Average rainfall in December
Harris, NY

Average rainfall in December - Harris, NY
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is May (2.8").
The driest months (with the least rainfall) are January and February (1.65").

Average rainfall days in December
Harris, NY

Average rainfall days in December - Harris, NY
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in December
Harris, NY

Average snowfall in December - Harris, NY
  • Average snowfall in December: 5.04"

The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Harris, NY

Average snowfall days in December - Harris, NY
  • Average snowfall days in December: 8.1 days

The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Harris, NY
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in December
Harris, NY

Average sunshine days in December - Harris, NY
  • Average sunshine days in December: 16.2 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Harris, NY

Average UV index in December - Harris, NY
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Harris, NY

Average cloud cover in December - Harris, NY
  • Average cloud cover in December: 55

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in December
Harris, NY

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

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

Harris, New York, USA

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