December weather forecastCastle Junction, Canada
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Castle Junction, Canada, with an average temperature varying between -17.1°C (1.2°F) and -9.1°C (15.6°F).Temperature
December, with average temperatures reaching a high of -9.1°C (15.6°F) and a low of -17.1°C (1.2°F), is the coldest month.Humidity
The months with the highest humidity are January through March and December, with an average relative humidity of 94%.Rainfall
In Castle Junction, during December, the rain falls for 2.1 days and regularly aggregates up to 33mm (1.3") of precipitation. In Castle Junction, during the entire year, the rain falls for 119.4 days and collects up to 548mm (21.57") of precipitation.Snowfall
January through July, September through December are months with snowfall. In Castle Junction, during December, snow falls for 20.5 days and regularly aggregates up to 273mm (10.75") of snow. In Castle Junction, during the entire year, snow falls for 155 days and aggregates up to 2156mm (84.88") of snow.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 8:26 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 8:47 am and sunset at 4:46 pm MST.
Sunshine
The average sunshine in December is 3h.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: In December, a regular UV index of 1 translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Castle Junction, Canada
- Average high temperature in December: -9.1°C
The warmest month (with the highest average high temperature) is July (16.6°C).
The month with the lowest average high temperature is December (-9.1°C).
- Average low temperature in December: -17.1°C
The month with the highest average low temperature is July (4°C).
The coldest month (with the lowest average low temperature) is February (-17.8°C).
Average pressure in December
Castle Junction, Canada
- Average pressure in December: 1020mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is June (1012mbar).
Average wind speed in December
Castle Junction, Canada
- Average wind speed in December: 8km/h
The windiest month (with the highest average wind speed) is November (9.1km/h).
The calmest month (with the lowest average wind speed) is May (7km/h).
Average humidity in December
Castle Junction, Canada
- Average humidity in December: 94%
The months with the highest relative humidity are January, February, March and December (94%).
The months with the lowest relative humidity are July and August (63%).
Average rainfall in December
Castle Junction, Canada
- Average rainfall in December: 33mm
The wettest month (with the highest rainfall) is June (86mm).
The driest month (with the least rainfall) is February (30mm).
Average rainfall days in December
Castle Junction, Canada
- Average rainfall days in December: 2.1 days
The month with the highest number of rainy days is June (21.3 days).
The month with the least rainy days is December (2.1 days).
Average snowfall in December
Castle Junction, Canada
- Average snowfall in December: 273mm
The month with the highest snowfall is March (363mm).
The month with the least snowfall is August (0mm).
Average snowfall days in December
Castle Junction, Canada
- Average snowfall days in December: 20.5 days
The month with the highest number of snowfall days is March (24.4 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Castle Junction, Canada
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 3h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Castle Junction, Canada
- Average sunshine days in December: 10.9 days
The month with the most sunshine days is August (15.9 days).
The month with the least sunshine days is April (5.1 days).
Average UV index in December
Castle Junction, Canada
- Average UV index in December: 1
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in December
Castle Junction, Canada
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Castle Junction, Canada
- Average visibility in December: 5km
The months with the highest visibility are June, July, August and September (9km).
The months with the lowest visibility are January and February (4km).
