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
The onset of December is marked by a decrease in temperature, transitioning from a chilly 43.7°F (6.5°C) in November to an icy 33.1°F (0.6°C). Nights in December showcase an average temperature of 24.4°F (-4.2°C), slightly cooler than the daytime.Humidity
The average relative humidity in December in Cardiff is 87%.Rainfall
In Cardiff, in December, during 7.9 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Cardiff, during the entire year, the rain falls for 150 days and collects up to 24.13" (613mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Cardiff, New York, in December, during 15 snowfall days, 5.83" (148mm) of snow is typically accumulated. In Cardiff, during the entire year, snow falls for 78.2 days and aggregates up to 29.37" (746mm) of snow.Daylight
The month with the shortest days in Cardiff is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:16 am and sunset at 4:31 pm. On the last day of December, in Cardiff, sunrise is at 7:35 am and sunset at 4:40 pm EST.
Sunshine
In Cardiff, the average sunshine in December is 3h.UV index
The months with the lowest UV index in Cardiff are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 1 turns into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Cardiff?
What is the average humidity in December in Cardiff?
How many days does it rain in December in Cardiff?
How many days does it snow in December in Cardiff?
What is the month with the shortest days in Cardiff?
How many hours of daylight does Cardiff have in December?
When is the sunrise / sunset in December in Cardiff?
How many hours of sunshine does Cardiff have in December?
What is the month with the lowest UV index in Cardiff?
What is the UV index reading in December in Cardiff?
Average temperature in December
Cardiff, NY
- Average high temperature in December: 33.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in December: 24.4°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 (16.2°F).
Average pressure in December
Cardiff, 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).
Average wind speed in December
Cardiff, NY
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Cardiff, NY
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (80%).
Average rainfall in December
Cardiff, NY
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is November (1.57").
Average rainfall days in December
Cardiff, NY
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Cardiff, NY
- Average snowfall in December: 5.83"
The month with the highest snowfall is February (6.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cardiff, NY
- Average snowfall days in December: 15 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cardiff, 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 18min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Cardiff, NY
- Average sunshine days in December: 10.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in December
Cardiff, 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
Cardiff, NY
- Average cloud cover in December: 70
The months with the most cloud cover are January and February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Cardiff, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May and October (6mi).
The months with the lowest visibility are January, February, March, June, July, August, September, November and December (5mi).
Cardiff, New York, USA
Weather forecast for your location
2. Allow the app to use your location