December weather forecast
Monticello, NY

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Weather in December

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

Temperature

December involves a decrease in temperature, down from a chilly 45.3°F (7.4°C) in November to a wintry 35.6°F (2°C). Throughout the month of December, the nighttime temperature in Monticello, New York, dips to an average of 23.9°F (-4.5°C).

Humidity

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

Rainfall

In Monticello, in December, during 9.8 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Monticello, during the entire year, the rain falls for 153.7 days and collects up to 26.73" (679mm) of precipitation.

Snowfall

Months with snowfall in Monticello are January through May, October through December. December is the month with the most snowfall. Snow falls for 8.1 days and accumulates 5.04" (128mm) of snow.

Daylight

The month with the shortest days in Monticello, New York, is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:06 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.

Sunshine

The average sunshine in December in Monticello is 4.3h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Monticello, New York. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

How cold is December in Monticello?

Monticello in December has an average high-temperature of 35.6°F (2°C) and an average low-temperature of 23.9°F (-4.5°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, in July is appraised at 86°F (30°C).

What is the most humid month in Monticello?

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

What is the average humidity in December in Monticello?

In Monticello, the average relative humidity in December is 85%.

How many days does it rain in December in Monticello?

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

What is the snowiest month in Monticello?

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 many days does it snow in December in Monticello?

In December, in Monticello, it is snowing for 8.1 days. Throughout December, 5.04" (128mm) of snow is accumulated.

What is the month with the shortest days in Monticello?

December has the shortest days of the year in Monticello, with an average of 9h and 12min of daylight.

How many hours of daylight does Monticello have in December?

In December, the average day length is 9h and 13min.

When is the sunrise / sunset in December in Monticello?

On the first day of December, sunrise is at 7:06 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 many hours of sunshine does Monticello have in December?

In December, the average sunshine duration is 4.3h.

What are the months with the lowest UV index in Monticello?

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

What is the UV index intensity in December in Monticello?

The average daily maximum UV index in December in Monticello, New York, is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Monticello, NY

Average temperature in December - Monticello, 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).

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Average pressure in December
Monticello, NY

Average pressure in December - Monticello, 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).

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Average wind speed in December
Monticello, NY

Average wind speed in December - Monticello, 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).

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Average humidity in December
Monticello, NY

Average humidity in December - Monticello, 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%).

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Average rainfall in December
Monticello, NY

Average rainfall in December - Monticello, 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").

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Average rainfall days in December
Monticello, NY

Average rainfall days in December - Monticello, 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).

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Average snowfall in December
Monticello, NY

Average snowfall in December - Monticello, 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").

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Average snowfall days in December
Monticello, NY

Average snowfall days in December - Monticello, 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).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
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).

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Average sunshine days in December
Monticello, NY

Average sunshine days in December - Monticello, 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).

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Average UV index in December
Monticello, NY

Average UV index in December - Monticello, 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).

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Average cloud cover in December
Monticello, NY

Average cloud cover in December - Monticello, 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).

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Average visibility in December
Monticello, NY

Average visibility in December - Monticello, 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).

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Monticello, New York, USA

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