December weather forecastRock Harbour, Canada
December
Weather in December
The first month of the winter, December, is still a cold month in Rock Harbour, Canada, with temperature in the range of an average high of 3.4°C (38.1°F) and an average low of 0.3°C (32.5°F).Temperature
The onset of December brings a small shift in high-temperatures, falling from a chilly 7.5°C (45.5°F) in November to an icy 3.4°C (38.1°F). Rock Harbour's December nights experience a subtle temperature dip to an average of 0.3°C (32.5°F).Humidity
January, November and December, with an average relative humidity of 79%, are the least humid months in Rock Harbour.Rainfall
In Rock Harbour, during December, the rain falls for 10.4 days and regularly aggregates up to 63mm (2.48") of precipitation. Throughout the year, there are 140.2 rainfall days, and 719mm (28.31") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Rock Harbour, Canada, in December, during 6.4 snowfall days, 45mm (1.77") of snow is typically accumulated. Throughout the year, there are 31.9 snowfall days, and 229mm (9.02") of snow is accumulated.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:36 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:56 am and sunset at 4:30 pm NST.
Sunshine
The average sunshine in December in Rock Harbour is 2.5h.UV index
The months with the lowest UV index in Rock Harbour are January, March and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 1 in December translates into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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 daylight in December /
Average sunshine in December
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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
Rock Harbour, 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).
