December weather forecast
Port Colborne, Canada

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Weather in December

The first month of the winter, December, is also a wintry month in Port Colborne, Canada, with an average temperature ranging between max 2.2°C (36°F) and min -2°C (28.4°F).

Temperature

Port Colborne's weather in December involves a decrease in the average high-temperature, moving down from November's frosty 7.6°C (45.7°F) to a wintry 2.2°C (36°F). In Port Colborne, the December nights are characterized by an average low-temperature of -2°C (28.4°F), a minor dip from daytime readings.

Humidity

In December, the average relative humidity in Port Colborne is 81%.

Rainfall

In Port Colborne, during December, the rain falls for 10.4 days and regularly aggregates up to 58mm (2.28") of precipitation. Throughout the year, there are 170.3 rainfall days, and 804mm (31.65") of precipitation is accumulated.

Snowfall

Months with snowfall in Port Colborne are January through May, October through December. In Port Colborne, in December, snow falls for 13.5 days, with typically accumulated 94mm (3.7") of snow. In Port Colborne, during the entire year, snow falls for 64.1 days and aggregates up to 576mm (22.68") of snow.

Daylight

With an average of 9h and 6min of daylight, December has the shortest days of the year in Port Colborne.
On the first day of December, sunrise is at 7:28 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:52 pm EST.

Sunshine

In Port Colborne, the average sunshine in December is 2.8h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: A typical high UV index of 1 in December suggests the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

How cold is it in Port Colborne in December?

The high-temperature during December is 2.2°C (36°F) and the low-temperature is -2°C (28.4°F).

What is the average humidity in December in Port Colborne?

In December, the average relative humidity in Port Colborne, Canada, is 81%.

How much does it rain in Port Colborne in December?

In December, in Port Colborne, the rain falls for 10.4 days. Throughout December, 58mm (2.28") of precipitation is accumulated.

How many days does it snow in December in Port Colborne?

In Port Colborne, Canada, in December, snow falls for 13.5 days, with typically accumulated 94mm (3.7") of snow.

What is the month with the shortest days in Port Colborne?

With an average of 9h and 6min of daylight, December has the shortest days of the year in Port Colborne.

How many hours of daylight does Port Colborne have in December?

In December, the average day length is 9h and 5min.

When are sunrise and sunset in December in Port Colborne?

On the first day of December in Port Colborne, Canada, sunrise is at 7:28 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:52 pm EST.

How long on average sun shines in December in Port Colborne?

In Port Colborne, Canada, the average sunshine duration in December is 2.8h.

When is the lowest UV index in Port Colborne?

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

How high is the UV index in December in Port Colborne?

The average daily maximum UV index in December in Port Colborne, Canada, is 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Port Colborne, Canada

Average temperature in December - Port Colborne, Canada
  • Average high temperature in December: 2.2°C

The warmest month (with the highest average high temperature) is July (25.7°C).
The month with the lowest average high temperature is January (-1.5°C).

  • Average low temperature in December: -2°C

The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-6.7°C).

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Average pressure in December
Port Colborne, Canada

Average pressure in December - Port Colborne, Canada
  • Average pressure in December: 1017.9mbar

The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in December
Port Colborne, Canada

Average wind speed in December - Port Colborne, Canada
  • Average wind speed in December: 18.2km/h

The windiest month (with the highest average wind speed) is January (19.6km/h).
The calmest month (with the lowest average wind speed) is July (11.6km/h).

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Average humidity in December
Port Colborne, Canada

Average humidity in December - Port Colborne, Canada
  • Average humidity in December: 81%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (75%).

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Average rainfall in December
Port Colborne, Canada

Average rainfall in December - Port Colborne, Canada
  • Average rainfall in December: 58mm

The wettest month (with the highest rainfall) is July (86mm).
The driest month (with the least rainfall) is September (53mm).

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Average rainfall days in December
Port Colborne, Canada

Average rainfall days in December - Port Colborne, Canada
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is July (18.7 days).
The months with the least rainy days are January and February (8.1 days).

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Average snowfall in December
Port Colborne, Canada

Average snowfall in December - Port Colborne, Canada
  • Average snowfall in December: 94mm

The month with the highest snowfall is February (179mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Port Colborne, Canada

Average snowfall days in December - Port Colborne, Canada
  • Average snowfall days in December: 13.5 days

The month with the highest number of snowfall days is January (15.8 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
Port Colborne, Canada

Average daylight in December / Average sunshine in December - Port Colborne, Canada
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 2h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

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Average sunshine days in December
Port Colborne, Canada

Average sunshine days in December - Port Colborne, Canada
  • Average sunshine days in December: 8.6 days

The month with the most sunshine days is September (12.6 days).
The month with the least sunshine days is January (8.3 days).

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Average UV index in December
Port Colborne, Canada

Average UV index in December - Port Colborne, 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
Port Colborne, Canada

Average cloud cover in December - Port Colborne, Canada
  • Average cloud cover in December: 70

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 30).

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Average visibility in December
Port Colborne, Canada

Average visibility in December - Port Colborne, Canada
  • Average visibility in December: 9km

The month with the highest visibility is September (10km).
The months with the lowest visibility are January and February (8km).

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Port Colborne, Canada

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