December weather forecast
Richmond Hill, Canada

Weather in December

December, the first month of the winter in Richmond Hill, is also a wintry month, with an average temperature fluctuating between -4.3°C (24.3°F) and 0.3°C (32.5°F).

Temperature

In Richmond Hill, the average high-temperature in December decreases from a chilly 6.1°C (43°F) in November to a cold 0.3°C (32.5°F). In December, the average low-temperature is -4.3°C (24.3°F).

Humidity

In Richmond Hill, the average relative humidity in December is 84%.

Rainfall

In Richmond Hill, in December, during 10.9 rainfall days, 48mm (1.89") of precipitation is typically accumulated. Throughout the year, there are 161.4 rainfall days, and 696mm (27.4") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Richmond Hill, during December, snow falls for 13.7 days and regularly aggregates up to 118mm (4.65") of snow. In Richmond Hill, Canada, during the entire year, snow falls for 67.2 days and aggregates up to 637mm (25.08") of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 58min of daylight.
On the first day of December in Richmond Hill, 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 Richmond Hill, Canada, the average sunshine in December is 3.3h.

UV index

The months with the lowest UV index in Richmond Hill, Canada, are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Richmond Hill?

In Richmond Hill, Canada, in December, the average high-temperature is 0.3°C (32.5°F), and the average low-temperature is -4.3°C (24.3°F).

What is the average humidity in December in Richmond Hill?

The average relative humidity in December in Richmond Hill is 84%.

How much does it rain in Richmond Hill in December?

In Richmond Hill, Canada, in December, during 10.9 rainfall days, 48mm (1.89") of precipitation is typically accumulated.

How many days does it snow in December in Richmond Hill?

In December, it is snowing for 13.7 days. Throughout December, 118mm (4.65") of snow is accumulated.

What is the month with the shortest days in Richmond Hill?

The month with the shortest days in Richmond Hill, Canada, is December, with an average of 8h and 58min of daylight.

How many hours of daylight does Richmond Hill have in December?

In Richmond Hill, Canada, the average day length in December is 8h and 58min.

What time are sunrise and sunset in December in Richmond Hill?

In December, on the first day of the month, sunrise is at 7:32 am and sunset at 4:41 pm. On the last day of the month, in Richmond Hill, sunrise is at 7:51 am and sunset at 4:49 pm EST.

How long on average sun shines in December in Richmond Hill?

In Richmond Hill, the average sunshine duration in December is 3.3h.

When is the lowest UV index in Richmond Hill?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Richmond Hill, Canada.

What is the UV index reading in December in Richmond Hill?

The average daily maximum UV index in December in Richmond Hill, Canada, is 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.

Average temperature in December
Richmond Hill, Canada

Average temperature in December - Richmond Hill, Canada
  • Average high temperature in December: 0.3°C

The warmest month (with the highest average high temperature) is July (24.9°C).
The month with the lowest average high temperature is January (-3.3°C).

  • Average low temperature in December: -4.3°C

The month with the highest average low temperature is July (16.6°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).

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Average pressure in December
Richmond Hill, Canada

Average pressure in December - Richmond Hill, 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 (1013.1mbar).

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Average wind speed in December
Richmond Hill, Canada

Average wind speed in December - Richmond Hill, Canada
  • Average wind speed in December: 16.2km/h

The windiest month (with the highest average wind speed) is January (17.1km/h).
The calmest month (with the lowest average wind speed) is July (10.7km/h).

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Average humidity in December
Richmond Hill, Canada

Average humidity in December - Richmond Hill, 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%).

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Average rainfall in December
Richmond Hill, Canada

Average rainfall in December - Richmond Hill, Canada
  • Average rainfall in December: 48mm

The wettest month (with the highest rainfall) is October (72mm).
The driest month (with the least rainfall) is February (41mm).

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Average rainfall days in December
Richmond Hill, Canada

Average rainfall days in December - Richmond Hill, Canada
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is February (6.9 days).

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Average snowfall in December
Richmond Hill, Canada

Average snowfall in December - Richmond Hill, Canada
  • Average snowfall in December: 118mm

The month with the highest snowfall is February (163mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Richmond Hill, Canada

Average snowfall days in December - Richmond Hill, Canada
  • Average snowfall days in December: 13.7 days

The month with the highest number of snowfall days is February (16.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Richmond Hill, Canada

Average daylight in December / Average sunshine in December - Richmond Hill, Canada
  • Average daylight in December: 8h and 58min

The month with the longest days is June (Average daylight: 15h and 25min).
The month with the shortest days is December (Average daylight: 8h and 58min).

  • Average sunshine in December: 3h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in December
Richmond Hill, Canada

Average sunshine days in December - Richmond Hill, Canada
  • Average sunshine days in December: 10.2 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (9.8 days).

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Average UV index in December
Richmond Hill, Canada

Average UV index in December - Richmond Hill, 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).

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Average cloud cover in December
Richmond Hill, Canada

Average cloud cover in December - Richmond Hill, 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 July (Cloud cover 28).

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Average visibility in December
Richmond Hill, Canada

Average visibility in December - Richmond Hill, Canada
  • Average visibility in December: 9km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).

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