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
Setting in of December comes with a decrease in the average high-temperature, moving from a cold 41.9°F (5.5°C) in November to a subzero cold 30.2°F (-1°C). December nights are marked by an average low-temperature of 20.3°F (-6.5°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Norfolk, during December, the rain falls for 9.8 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Norfolk, during the entire year, the rain falls for 156 days and collects up to 29.72" (755mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Norfolk, in December, snow falls for 14.6 days, with typically accumulated 6.34" (161mm) of snow. Throughout the year, in Norfolk, there are 74.7 snowfall days, and 37.99" (965mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:20 pm. On the last day of December, sunrise is at 7:37 am and sunset at 4:29 pm EST.
Sunshine
In December, the average sunshine is 2.8h.UV index
The months with the lowest UV index in Norfolk are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 1 in December leads to these recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Norfolk have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Norfolk, NY
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in December: 20.3°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 (10.8°F).
Average pressure in December
Norfolk, NY
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Norfolk, NY
- Average wind speed in December: 7.9mph
The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in December
Norfolk, NY
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Norfolk, NY
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.03").
The driest months (with the least rainfall) are March and September (2.01").
Average rainfall days in December
Norfolk, NY
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Norfolk, NY
- Average snowfall in December: 6.34"
The month with the highest snowfall is January (8.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Norfolk, NY
- Average snowfall days in December: 14.6 days
The month with the highest number of snowfall days is February (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Norfolk, NY
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 2h and 36min).
Average sunshine days in December
Norfolk, NY
- Average sunshine days in December: 10.9 days
The month with the most sunshine days is November (15 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in December
Norfolk, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Norfolk, NY
- Average cloud cover in December: 71
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in December
Norfolk, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, September and October (6mi).
The months with the lowest visibility are January and February (4mi).
Norfolk, New York, USA
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