Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In Morrisville, the average high-temperature in December gently drops from a mild 59.4°F (15.2°C) in November to a cool 52.3°F (11.3°C). In the month of December, Morrisville's average low-temperature falls to a wintry 38.1°F (3.4°C).Humidity
December is the most humid month, with an average relative humidity of 76%.Rainfall
In Morrisville, during December, the rain falls for 10.7 days and regularly aggregates up to 2.56" (65mm) of precipitation. Throughout the year, there are 161.9 rainfall days, and 31.18" (792mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Morrisville, in December, during 0.8 snowfall days, 0.67" (17mm) of snow is typically accumulated. Throughout the year, there are 5.9 snowfall days, and 4.37" (111mm) of snow is accumulated.Daylight
The month with the shortest days in Morrisville is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:11 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.5h of sunshine.UV index
The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 3 in December leads to these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Morrisville, NC
- Average high temperature in December: 52.3°F
The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (48°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is July (70.9°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Morrisville, NC
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Morrisville, NC
- Average wind speed in December: 6.4mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Morrisville, NC
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Morrisville, NC
- Average rainfall in December: 2.56"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in December
Morrisville, NC
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in December
Morrisville, NC
- Average snowfall in December: 0.67"
The month with the highest snowfall is January (1.61").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Morrisville, NC
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Morrisville, NC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Morrisville, NC
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Morrisville, NC
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Morrisville, NC
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Morrisville, NC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Morrisville, North Carolina, USA
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