December weather forecastMorrisville, NY
December
Weather in December
The first month of the winter, December, is also an icy month in Morrisville, New York, with an average temperature ranging between max 33.3°F (0.7°C) and min 24.3°F (-4.3°C).Temperature
In the transition to December, Morrisville observes a drop in the average high-temperature, moving from a chilly 43.7°F (6.5°C) in November to a cold 33.3°F (0.7°C). The temperature during December nights demonstrates a small drop from the daytime highs, settling to an average of 24.3°F (-4.3°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In December, the rain falls for 9.1 days. Throughout December, 3.03" (77mm) of precipitation is accumulated. In Morrisville, during the entire year, the rain falls for 161.6 days and collects up to 36.02" (915mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Morrisville, in December, snow falls for 15.9 days, with typically accumulated 10.2" (259mm) of snow. In Morrisville, during the entire year, snow falls for 88.2 days and aggregates up to 50.98" (1295mm) of snow.Daylight
December has the shortest days of the year in Morrisville, New York, with an average of 9h and 6min of daylight.On the first day of December, 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 is 3h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Morrisville, NY
- Average daylight in December: 9h and 6min
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).
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).
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).
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).
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).
