December weather forecastLongueuil, Canada
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Longueuil, Canada, with an average temperature varying between -2.2°C (28°F) and -7.6°C (18.3°F).Temperature
The average high-temperature decreases in December, shifting from an icy 5.1°C (41.2°F) in November to a subzero cold -2.2°C (28°F). Longueuil records a consistent low-temperature of -7.6°C (18.3°F) during December nights.Humidity
In Longueuil, the average relative humidity in December is 86%.Rainfall
In Longueuil, in December, it is raining for 8.5 days, with typically 75mm (2.95") of accumulated precipitation. Throughout the year, there are 154.5 rainfall days, and 864mm (34.02") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Longueuil, Canada, in December, during 14.5 snowfall days, 211mm (8.31") of snow is typically accumulated. Throughout the year, in Longueuil, there are 74.1 snowfall days, and 1120mm (44.09") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 4:12 pm. On the last day of December, in Longueuil, sunrise is at 7:34 am and sunset at 4:20 pm EST.
Sunshine
The average sunshine in December is 3.2h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Longueuil. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Longueuil, Canada
- Average high temperature in December: -2.2°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: -7.6°C
The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).
Average pressure in December
Longueuil, 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
Longueuil, Canada
- Average wind speed in December: 13km/h
The windiest month (with the highest average wind speed) is April (14.3km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).
Average humidity in December
Longueuil, Canada
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (73%).
Average rainfall in December
Longueuil, Canada
- Average rainfall in December: 75mm
The wettest month (with the highest rainfall) is May (85mm).
The driest month (with the least rainfall) is September (55mm).
Average rainfall days in December
Longueuil, Canada
- Average rainfall days in December: 8.5 days
The months with the highest number of rainy days are May and July (17.8 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Longueuil, Canada
- Average snowfall in December: 211mm
The month with the highest snowfall is January (293mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Longueuil, Canada
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Longueuil, Canada
- Average daylight in December: 8h and 48min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in December
Longueuil, Canada
- Average sunshine days in December: 11.1 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is February (8.9 days).
Average UV index in December
Longueuil, 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
Longueuil, Canada
- Average cloud cover in December: 66
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
Longueuil, 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).
