December weather forecastMarkham, Canada
December
Weather in December
December is one of the coldest months in Markham, marking the end of the year with freezing temperatures. Following November’s trend, there's another decrease in temperature, and snowfall increases as winter begins in earnest. The average snowfall further rises to 81mm (3.19") occurring over 11.2 days in the month. Despite the chilling weather, December offers a magical winter atmosphere, which coupled with the festive cheer makes it a special time in Markham.Temperature
In December, the average high-temperature in Markham decreases from a chilly 6.1°C (43°F) in November to an icy 0.5°C (32.9°F). Markham registers a steady nighttime temperature averaging a freezing cold -4.1°C (24.6°F) throughout December.Humidity
In Markham, the average relative humidity in December is 84%.Rainfall
In December, in Markham, the rain falls for 8.6 days. Throughout December, 39mm (1.54") of precipitation is accumulated. Throughout the year, in Markham, Canada, there are 157.1 rainfall days, and 653mm (25.71") of precipitation is accumulated.Snowfall
Months with snowfall in Markham, Canada, are January through May, October through December. In Markham, during December, snow falls for 11.2 days and regularly aggregates up to 81mm (3.19") of snow. Throughout the year, in Markham, there are 51.3 snowfall days, and 415mm (16.34") of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Markham.On the first day of December in Markham, sunrise is at 7:32 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 4:49 pm EST.
Sunshine
In December, the average sunshine in Markham is 3.4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To cut down UV radiation exposure by about half, sport a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Markham, Canada
- Average high temperature in December: 0.5°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.2°C).
- Average low temperature in December: -4.1°C
The months with the highest average low temperature are July and August (16.6°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in December
Markham, 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
Markham, Canada
- Average wind speed in December: 16.6km/h
The windiest month (with the highest average wind speed) is January (17.5km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).
Average humidity in December
Markham, 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 (75%).
Average rainfall in December
Markham, Canada
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is July (78mm).
The driest month (with the least rainfall) is February (30mm).
Average rainfall days in December
Markham, Canada
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Markham, Canada
- Average snowfall in December: 81mm
The month with the highest snowfall is January (118mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Markham, Canada
- Average snowfall days in December: 11.2 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Markham, 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 24min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Markham, Canada
- Average sunshine days in December: 13.4 days
The month with the most sunshine days is March (14.9 days).
The month with the least sunshine days is August (9 days).
Average UV index in December
Markham, 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
Markham, Canada
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Markham, Canada
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
