December weather forecast
Mont Saint-Hilaire, Canada

December

Weather in December

December, the first month of the winter in Mont Saint-Hilaire, is also a subzero cold month, with an average temperature varying between -2.3°C (27.9°F) and -7.7°C (18.1°F).

Temperature

The shift from November to December corresponds with a decrease in the average high-temperature, down to a subzero cold -2.3°C (27.9°F) from a cold 5°C (41°F). During the month of December, Mont Saint-Hilaire experiences a steady low-temperature average of -7.7°C (18.1°F).

Humidity

In Mont Saint-Hilaire, the average relative humidity in December is 86%.

Rainfall

In Mont Saint-Hilaire, Canada, in December, during 8.5 rainfall days, 75mm (2.95") of precipitation is typically accumulated. In Mont Saint-Hilaire, during the entire year, the rain falls for 159.6 days and collects up to 875mm (34.45") of precipitation.

Snowfall

Months with snowfall in Mont Saint-Hilaire, Canada, are January through May, October through December. In Mont Saint-Hilaire, during December, snow falls for 15.5 days and regularly aggregates up to 216mm (8.5") of snow. In Mont Saint-Hilaire, Canada, during the entire year, snow falls for 77.9 days and aggregates up to 1133mm (44.61") of snow.

Daylight

With an average of 8h and 48min of daylight, December has the shortest days of the year in Mont Saint-Hilaire.
On the first day of the month, sunrise is at 7:13 am and sunset at 4:10 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:19 pm EST.

Sunshine

In December, the average sunshine in Mont Saint-Hilaire is 3.1h.

UV index

The months with the lowest UV index in Mont Saint-Hilaire are January, February 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 ordinary individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Frequently asked questions

How cold is December in Mont Saint-Hilaire?
In Mont Saint-Hilaire, in December, the average high-temperature is -2.3°C (27.9°F), and the average low-temperature is -7.7°C (18.1°F).
What is the average humidity in December in Mont Saint-Hilaire?
The average relative humidity in December in Mont Saint-Hilaire, Canada, is 86%.
How much does it rain in Mont Saint-Hilaire in December?
In Mont Saint-Hilaire, Canada, in December, during 8.5 rainfall days, 75mm (2.95") of precipitation is typically accumulated.
How many days does it snow in December in Mont Saint-Hilaire?
In December, in Mont Saint-Hilaire, Canada, it is snowing for 15.5 days. Throughout December, 216mm (8.5") of snow is accumulated.
What is the month with the shortest days in Mont Saint-Hilaire?
The month with the shortest days is December, with an average of 8h and 48min of daylight.
How many hours of daylight does Mont Saint-Hilaire have in December?
In December, the average day length in Mont Saint-Hilaire, Canada, is 8h and 46min.
What time are sunrise and sunset in December in Mont Saint-Hilaire?
On the first day of December, sunrise is at 7:13 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:19 pm EST.
How long on average sun shines in December in Mont Saint-Hilaire?
In Mont Saint-Hilaire, Canada, the average sunshine duration in December is 3.1h.
What is the month with the lowest UV index in Mont Saint-Hilaire?
The months with the lowest UV index in Mont Saint-Hilaire, Canada, are January, February and December, with an average maximum UV index of 1.
How high is the UV index in December in Mont Saint-Hilaire?
In December, the average daily maximum UV index in Mont Saint-Hilaire, Canada, is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Mont Saint-Hilaire, Canada
  • Average high temperature in December: -2.3°C

The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is January (-5.8°C).

  • Average low temperature in December: -7.7°C

The month with the highest average low temperature is July (15.9°C).
The coldest month (with the lowest average low temperature) is January (-13°C).

Average pressure in December
Mont Saint-Hilaire, Canada
  • Average pressure in December: 1017.3mbar

The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).

Average wind speed in December
Mont Saint-Hilaire, Canada
  • Average wind speed in December: 13km/h

The windiest months (with the highest average wind speed) are February and April (14.2km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).

Average humidity in December
Mont Saint-Hilaire, Canada
  • Average humidity in December: 86%

The months with the highest relative humidity are January and February (90%).
The months with the lowest relative humidity are April and May (74%).

Average rainfall in December
Mont Saint-Hilaire, Canada
  • Average rainfall in December: 75mm

The wettest month (with the highest rainfall) is May (86mm).
The driest month (with the least rainfall) is September (56mm).

Average rainfall days in December
Mont Saint-Hilaire, Canada
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (5.7 days).

Average snowfall in December
Mont Saint-Hilaire, Canada
  • Average snowfall in December: 216mm

The month with the highest snowfall is January (295mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
Mont Saint-Hilaire, Canada
  • Average snowfall days in December: 15.5 days

The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Mont Saint-Hilaire, Canada
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in December: 3h and 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).

Average sunshine days in December
Mont Saint-Hilaire, Canada
  • Average sunshine days in December: 10.7 days

The month with the most sunshine days is September (16 days).
The month with the least sunshine days is February (8.7 days).

Average UV index in December
Mont Saint-Hilaire, 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, February and December (UV index 1).

Average cloud cover in December
Mont Saint-Hilaire, Canada
  • Average cloud cover in December: 67

The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in December
Mont Saint-Hilaire, Canada
  • Average visibility in December: 8km

The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and February (7km).

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