December weather forecastWhitby, Canada
December
Weather in December
The first month of the winter, December, is still a cold month in Whitby, Canada, with temperature in the range of an average low of -3.6°C (25.5°F) and an average high of 0.5°C (32.9°F).Temperature
With the beginning of December, the average high-temperature shows a decrease, transitioning from a frosty 6.1°C (43°F) in November to a wintry 0.5°C (32.9°F). Whitby, during the nights of December, averages a temperature close to its daytime high, at a subzero cold -3.6°C (25.5°F).Humidity
In Whitby, Canada, the average relative humidity in December is 84%.Rainfall
In Whitby, in December, during 9.8 rainfall days, 44mm (1.73") of precipitation is typically accumulated. In Whitby, during the entire year, the rain falls for 158.8 days and collects up to 693mm (27.28") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Whitby, in December, snow falls for 9.1 days, with typically accumulated 65mm (2.56") of snow. Throughout the year, there are 51.4 snowfall days, and 383mm (15.08") of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:30 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:49 am and sunset at 4:48 pm EST.
Sunshine
In Whitby, the average sunshine in December is 3.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Whitby, Canada
- Average high temperature in December: 0.5°C
The warmest month (with the highest average high temperature) is July (24.4°C).
The month with the lowest average high temperature is January (-2.9°C).
- Average low temperature in December: -3.6°C
The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure in December
Whitby, Canada
- Average pressure in December: 1017.3mbar
The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013mbar).
Average wind speed in December
Whitby, Canada
- Average wind speed in December: 17.9km/h
The windiest month (with the highest average wind speed) is January (18.7km/h).
The calmest month (with the lowest average wind speed) is July (11.4km/h).
Average humidity in December
Whitby, Canada
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Whitby, Canada
- Average rainfall in December: 44mm
The wettest month (with the highest rainfall) is August (73mm).
The driest months (with the least rainfall) are February and November (43mm).
Average rainfall days in December
Whitby, Canada
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Whitby, Canada
- Average snowfall in December: 65mm
The month with the highest snowfall is February (110mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Whitby, Canada
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Whitby, Canada
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Whitby, Canada
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in December
Whitby, Canada
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Whitby, Canada
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Whitby, Canada
- Average visibility in December: 9km
The months with the highest visibility are August and September (10km).
The month with the lowest visibility is January (8km).
