December weather forecastMarystown, Canada
December weather for Marystown, Canada: In Marystown, in December, snow falls for 6.4 days, with typically accumulated 45mm (1.77") of snow. In Marystown, Canada, in December, it is raining for 10.4 days, with typically 63mm (2.48") of accumulated precipitation.
December
Weather in December
The first month of the winter, December, is also an icy month in Marystown, Canada, with temperature in the range of an average low of 0.3°C (32.5°F) and an average high of 3.4°C (38.1°F).Temperature
With the onset of December, Marystown's climate undergoes a slight change as the average high-temperature moves from a chilly 7.5°C (45.5°F) in November to a cold 3.4°C (38.1°F). A modest decline from daytime high temperatures in Marystown is noticed in December, marking the average low at a still wintry 0.3°C (32.5°F).Humidity
January, November and December, with an average relative humidity of 79%, are the least humid months in Marystown.Rainfall
In Marystown, Canada, in December, during 10.4 rainfall days, 63mm (2.48") of precipitation is typically accumulated. In Marystown, during the entire year, the rain falls for 140.2 days and collects up to 719mm (28.31") of precipitation.Snowfall
Months with snowfall in Marystown, Canada, are January through May, November and December. In Marystown, in December, during 6.4 snowfall days, 45mm (1.77") of snow is typically accumulated. In Marystown, Canada, during the entire year, snow falls for 31.9 days and aggregates up to 229mm (9.02") of snow.Sea temperature
In December, the average sea temperature is 4.2°C (39.6°F).Note: In the realm of swimming, this state is extremely cold, treacherous, and life-threatening. Without properly insulated waterproof clothing, hypothermia develops almost immediately.
Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year in Marystown.On the first day of December, sunrise is at 7:36 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 4:30 pm NST.
Sunshine
In Marystown, the average sunshine in December is 2.5h.UV index
January, March and December, with an average maximum UV index of 1, are months with the lowest UV index in Marystown. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 1 in December interprets into the following advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Marystown, Canada
- Average high temperature in December: 3.4°C
The warmest month (with the highest average high temperature) is August (17.9°C).
The month with the lowest average high temperature is February (-0.2°C).
- Average low temperature in December: 0.3°C
The month with the highest average low temperature is August (16.2°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).
Average pressure in December
Marystown, Canada
- Average pressure in December: 1011.7mbar
The month with the highest atmospheric pressure is September (1015.9mbar).
The month with the lowest atmospheric pressure is February (1009.2mbar).
Average wind speed in December
Marystown, Canada
- Average wind speed in December: 36.1km/h
The windiest month (with the highest average wind speed) is January (37.2km/h).
The calmest month (with the lowest average wind speed) is July (22.3km/h).
Average humidity in December
Marystown, Canada
- Average humidity in December: 79%
The month with the highest relative humidity is July (89%).
The months with the lowest relative humidity are January, November and December (79%).
Average rainfall in December
Marystown, Canada
- Average rainfall in December: 63mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is May (50mm).
Average rainfall days in December
Marystown, Canada
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is February (5.5 days).
Average snowfall in December
Marystown, Canada
- Average snowfall in December: 45mm
The month with the highest snowfall is March (50mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in December
Marystown, Canada
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Marystown, Canada
- Average sea temperature in December: 4.2°C
The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (0.5°C).
Average daylight in December /
Average sunshine in December
Marystown, Canada
- Average daylight in December: 8h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 2h and 30min
The month with the most sunshine is August (Average sunshine: 8h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in December
Marystown, Canada
- Average sunshine days in December: 9.2 days
The month with the most sunshine days is August (15.8 days).
The month with the least sunshine days is December (9.2 days).
Average UV index in December
Marystown, Canada
- Average UV index in December: 1
The month with the highest UV index is August (UV index 5).
The months with the lowest UV index are January, March and December (UV index 1).
Average cloud cover in December
Marystown, Canada
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are August and September (Cloud cover 45).
Average visibility in December
Marystown, Canada
- Average visibility in December: 9km
The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (9km).
