December weather forecast
Thorold, Canada

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Weather in December

The first month of the winter, December, is also an icy month in Thorold, Canada, with an average temperature ranging between max 2.4°C (36.3°F) and min -1.5°C (29.3°F).

Temperature

The beginning of December marks a decrease in the average high-temperature, transitioning from a frosty 7.8°C (46°F) in November to an icy 2.4°C (36.3°F). A consistent nighttime average temperature of -1.5°C (29.3°F) is maintained in Thorold, Canada, during December.

Humidity

The average relative humidity in December in Thorold is 80%.

Rainfall

In Thorold, during December, the rain falls for 11.8 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Thorold, there are 177.2 rainfall days, and 786mm (30.94") of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Thorold. In Thorold, in December, snow falls for 12.5 days, with typically accumulated 76mm (2.99") of snow. In Thorold, during the entire year, snow falls for 58.5 days and aggregates up to 403mm (15.87") of snow.

Sea temperature

In Thorold, Canada, the average seawater temperature in December is 4.9°C (40.8°F).
Note: In swimming scenarios, this situation is extremely cold, fraught with danger, and poses a significant life risk. Absent insulated waterproof clothing, hypothermia strikes quickly.

Daylight

The month with the shortest days in Thorold is December, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:29 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:48 am and sunset at 4:51 pm EST.

Sunshine

In Thorold, the average sunshine in December is 3.2h.

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 minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in Thorold in December?

In December, the average high-temperature and low-temperature in Thorold are 2.4°C (36.3°F) and -1.5°C (29.3°F) respectively.

What is the average humidity in December in Thorold?

In December, the average relative humidity is 80%.

How many days does it rain in December in Thorold?

In December, in Thorold, Canada, the rain falls for 11.8 days. Throughout December, 56mm (2.2") of precipitation is accumulated.

How much does it snow in Thorold in December?

In Thorold, in December, during 12.5 snowfall days, 76mm (2.99") of snow is typically accumulated.

What is the water temperature in December in Thorold?

In Thorold, Canada, in December, the average water temperature is 4.9°C (40.8°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the month with the shortest days in Thorold?

The month with the shortest days in Thorold, Canada, is December, with an average of 9h and 6min of daylight.

How many hours of daylight does Thorold have in December?

In December, the average day length is 9h and 4min.

What time are sunrise and sunset in December in Thorold?

On the first day of December, sunrise is at 7:29 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 4:51 pm EST.

How long on average sun shines in December in Thorold?

In Thorold, Canada, the average sunshine duration in December is 3.2h.

What is the month with the lowest UV index in Thorold?

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

What is the UV index intensity in December in Thorold?

In December, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe 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
Thorold, Canada

Average temperature in December - Thorold, Canada
  • Average high temperature in December: 2.4°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 (-1.4°C).

  • Average low temperature in December: -1.5°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

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Average pressure in December
Thorold, Canada

Average pressure in December - Thorold, Canada
  • Average pressure in December: 1017.7mbar

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in December
Thorold, Canada

Average wind speed in December - Thorold, Canada
  • Average wind speed in December: 19.7km/h

The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

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Average humidity in December
Thorold, Canada

Average humidity in December - Thorold, Canada
  • Average humidity in December: 80%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in December
Thorold, Canada

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

The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).

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Average rainfall days in December
Thorold, Canada

Average rainfall days in December - Thorold, Canada
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in December
Thorold, Canada

Average snowfall in December - Thorold, Canada
  • Average snowfall in December: 76mm

The month with the highest snowfall is February (127mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in December
Thorold, Canada

Average snowfall days in December - Thorold, Canada
  • Average snowfall days in December: 12.5 days

The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in December
Thorold, Canada

Average sea temperature in December - Thorold, Canada
  • Average sea temperature in December: 4.9°C

The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest month (with the lowest average sea temperature) is February (1.7°C).

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Average daylight in December /
Average sunshine in December
Thorold, Canada

Average daylight in December / Average sunshine in December - Thorold, 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: 3h and 1min

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 48min).

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Average sunshine days in December
Thorold, Canada

Average sunshine days in December - Thorold, Canada
  • Average sunshine days in December: 8.8 days

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

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Average UV index in December
Thorold, Canada

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

The months with the highest UV index are July and August (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
Thorold, Canada

Average cloud cover in December - Thorold, Canada
  • Average cloud cover in December: 66

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in December
Thorold, Canada

Average visibility in December - Thorold, Canada
  • Average visibility in December: 9km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).

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Thorold, Canada

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