December weather forecast
Morrisville, NY

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Weather in December

The first month of the winter, December, is also an icy month in Morrisville, New York, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 33.3°F (0.7°C).

Temperature

Morrisville's progression into December involves a drop in the average high-temperature, receding from a frosty 43.7°F (6.5°C) in November to a cold 33.3°F (0.7°C). Nighttime temperature in Morrisville reflects an average dip to a subzero cold 24.3°F (-4.3°C) in December, subtly cooler than its daytime highs.

Humidity

The average relative humidity in December is 86%.

Rainfall

In Morrisville, in December, during 9.1 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. In Morrisville, New York, during the entire year, the rain falls for 161.6 days and collects up to 36.02" (915mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, in Morrisville, it is snowing for 15.9 days. Throughout December, 10.2" (259mm) of snow is accumulated. Throughout the year, in Morrisville, there are 88.2 snowfall days, and 50.98" (1295mm) of snow is accumulated.

Daylight

With an average of 9h and 6min of daylight, December has the shortest days of the year.
On the first day of December in Morrisville, sunrise is at 7:14 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:38 pm EST.

Sunshine

The average sunshine in December in Morrisville is 3h.

UV index

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Morrisville. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, an average UV index of 1 transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

How cold is it in Morrisville in December?

In December, in Morrisville, the average high-temperature is 33.3°F (0.7°C), and the average low-temperature is 24.3°F (-4.3°C).

What is the average humidity in December in Morrisville?

In December, the average relative humidity in Morrisville, New York, is 86%.

How much does it rain in Morrisville in December?

In Morrisville, during December, the rain falls for 9.1 days and regularly aggregates up to 3.03" (77mm) of precipitation.

How much does it snow in Morrisville in December?

In Morrisville, during December, snow falls for 15.9 days and regularly aggregates up to 10.2" (259mm) of snow.

What is the month with the shortest days in Morrisville?

December has the shortest days of the year in Morrisville, New York, with an average of 9h and 6min of daylight.

How many hours of daylight does Morrisville have in December?

In Morrisville, New York, the average day length in December is 9h and 5min.

When is the sunrise / sunset in December in Morrisville?

In December, on the first day of the month, sunrise is at 7:14 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:38 pm EST.

How many hours of sunshine does Morrisville have in December?

In December, the average sunshine duration in Morrisville, New York, is 3h.

When is the lowest UV index in Morrisville?

January, February 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 Morrisville?

The average daily maximum UV index in December in Morrisville, New York, is 1. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
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
Morrisville, NY

Average temperature in December - Morrisville, NY
  • Average high temperature in December: 33.3°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in December: 24.3°F

The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

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Average pressure in December
Morrisville, NY

Average pressure in December - Morrisville, NY
  • Average pressure in December: 30.06"Hg

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

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Average wind speed in December
Morrisville, NY

Average wind speed in December - Morrisville, NY
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in December
Morrisville, NY

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

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).

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Average rainfall in December
Morrisville, NY

Average rainfall in December - Morrisville, NY
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is April (3.66").
The driest month (with the least rainfall) is September (2.32").

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Average rainfall days in December
Morrisville, NY

Average rainfall days in December - Morrisville, NY
  • Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (6.6 days).

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Average snowfall in December
Morrisville, NY

Average snowfall in December - Morrisville, NY
  • Average snowfall in December: 10.2"

The month with the highest snowfall is February (10.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Morrisville, NY

Average snowfall days in December - Morrisville, NY
  • Average snowfall days in December: 15.9 days

The month with the highest number of snowfall days is January (19.2 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
Morrisville, NY

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 3h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).

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Average sunshine days in December
Morrisville, NY

Average sunshine days in December - Morrisville, NY
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (6.7 days).

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Average UV index in December
Morrisville, NY

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

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 and December (UV index 1).

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Average cloud cover in December
Morrisville, NY

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

The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 35).

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Average visibility in December
Morrisville, NY

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

The month with the highest visibility is October (6mi).
The months with the lowest visibility are January and February (4mi).

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Morrisville, New York, USA

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