Brockville
Canada
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Brockville, Canada

December, the first month of the winter, in Brockville, is also a subzero cold month, with average temperature ranging between min -6.1°C (21°F) and max -0.8°C (30.6°F).

Temperature

In Brockville, the average high-temperature drops, from a chilly 6°C (42.8°F) in November, to a freezing cold -0.8°C (30.6°F). In December, in Brockville, the average low-temperature is -6.1°C (21°F).

Humidity

The average relative humidity in December is 86%.

Rainfall

In Brockville, it is raining for 9 days, with typically 56mm (2.2") of accumulated precipitation. In Brockville, during the entire year, the rain falls for 141.7 days and collects up to 669mm (26.34") of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Brockville, during 11.4 snowfall days, 126mm (4.96") of snow is typically accumulated. In Brockville, during the entire year, snow falls for 56.1 days, and aggregates up to 622mm (24.49") of snow.

Daylight

With an average of 8.9h of daylight, December has the shortest days of the year in Brockville.

Sunshine

In December, the average sunshine is 3h.

UV index

Months with the lowest UV index in Brockville are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 1 translate 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. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Brockville?

In December, the average high-temperature is -0.8°C (30.6°F), and the average low-temperature is -6.1°C (21°F).

What is the average humidity in December in Brockville?

The average relative humidity in December in Brockville is 86%.

How many days does it rain in December in Brockville?

In December, in Brockville, Canada, the rain falls for 9 days. Throughout December, 56mm (2.2") of precipitation is accumulated.

How much does it snow in Brockville in December?

In Brockville, in December, snow falls for 11.4 days, with typically accumulated 126mm (4.96") of snow.

What is the month with the shortest days in Brockville?

December has the shortest days of the year, with an average of 8.9h of daylight.

What is the average length of the day in December in Brockville?

The average length of the day in December in Brockville, Canada, is 8.9h.

How long on average sun shines in December in Brockville?

In December, the average sunshine in Brockville, Canada, is 3h.

What are the months with the lowest UV index in Brockville?

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

How high is the UV index in December in Brockville?

In December, the average daily maximum UV index in Brockville, Canada, is 1. A UV Index value of 2, and less, symbolizes a low health threat from the exposure to the Sun's UV radiation.
Average temperature in December - Brockville, Canada
  • Average high temperature in December: -0.8°C

The warmest month (with the highest average high temperature) is July (25.1°C).
The month with the lowest average high temperature is January (-4.4°C).

  • Average low temperature in December: -6.1°C

The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-11.8°C).

Average humidity in December - Brockville, Canada
  • Average humidity in December: 86%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December - Brockville, Canada
  • Average rainfall in December: 56mm

The wettest month (with the highest rainfall) is August (70mm).
Driest months (with the lowest rainfall) are March and November (43mm).

Average rainfall days in December - Brockville, Canada
  • Average rainfall days in December: 9 days

The month with the highest number of rainy days is July (17.1 days).
The month with the lowest number of rainy days is January (5 days).

Average snowfall in December - Brockville, Canada
  • Average snowfall in December: 126mm

The month with the highest snowfall is February (157mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in December - Brockville, Canada
  • Average snowfall days in December: 11.4 days

Months with the highest number of snowfall days are January and February (13.3 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Brockville, Canada
  • Average daylight in December: 8.9h

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

  • Average sunshine in December: 3h

Months with most sunshine are July and August (Average sunshine: 10.1h).
The month with least sunshine is February (Average sunshine: 2.7h).

Average UV index in December - Brockville, Canada
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).