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
December
Weather in December
Temperature
Copper Cliff's average high-temperature decreases in December, falling from an icy 2.4°C (36.3°F) in November to a freezing cold -4.6°C (23.7°F). During December, Copper Cliff records an average temperature of -10.4°C (13.3°F) at night.Humidity
In Copper Cliff, the average relative humidity in December is 90%.Rainfall
The months with the least rainfall in Copper Cliff, Canada, are February and December Rain falls for 5 days and accumulates 27mm (1.06") of rain.Snowfall
January through May, October through December are months with snowfall in Copper Cliff, Canada. In Copper Cliff, Canada, during December, snow falls for 15.7 days and regularly aggregates up to 110mm (4.33") of snow. Throughout the year, in Copper Cliff, there are 86.7 snowfall days, and 865mm (34.06") of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Copper Cliff.On the first day of December, sunrise is at 7:48 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 4:47 pm EST.
Sunshine
In December, the average sunshine in Copper Cliff is 2.5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 1 during December translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Copper Cliff?
What is the average humidity in December in Copper Cliff?
What is the driest month in Copper Cliff?
How much does it rain in Copper Cliff in December?
How many days does it snow in December in Copper Cliff?
What is the month with the shortest days in Copper Cliff?
How many hours of daylight does Copper Cliff have in December?
What time are sunrise and sunset in December in Copper Cliff?
How long on average sun shines in December in Copper Cliff?
What are the months with the lowest UV index in Copper Cliff?
What is the UV index intensity in December in Copper Cliff?
Average temperature in December
Copper Cliff, Canada
- Average high temperature in December: -4.6°C
The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (-8°C).
- Average low temperature in December: -10.4°C
The month with the highest average low temperature is July (12.7°C).
The coldest month (with the lowest average low temperature) is January (-15.9°C).
Average pressure in December
Copper Cliff, Canada
- Average pressure in December: 1017.1mbar
The month with the highest atmospheric pressure is March (1018.8mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).
Average wind speed in December
Copper Cliff, Canada
- Average wind speed in December: 11.8km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest months (with the lowest average wind speed) are June and August (10.1km/h).
Average humidity in December
Copper Cliff, Canada
- Average humidity in December: 90%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (68%).
Average rainfall in December
Copper Cliff, Canada
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is October (65mm).
The driest months (with the least rainfall) are February and December (27mm).
Average rainfall days in December
Copper Cliff, Canada
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is October (13.7 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in December
Copper Cliff, Canada
- Average snowfall in December: 110mm
The month with the highest snowfall is January (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Copper Cliff, Canada
- Average snowfall days in December: 15.7 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Copper Cliff, Canada
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 2h and 0min).
Average sunshine days in December
Copper Cliff, Canada
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is September (17.5 days).
The month with the least sunshine days is February (12.7 days).
Average UV index in December
Copper Cliff, Canada
- 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, February, March, November and December (UV index 1).
Average cloud cover in December
Copper Cliff, Canada
- Average cloud cover in December: 73
The month with the most cloud cover is January (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in December
Copper Cliff, Canada
- Average visibility in December: 7km
The months with the highest visibility are May, June and July (9km).
The month with the lowest visibility is January (6km).
