Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's onset brings a slight change in high-temperatures, falling from a cold 5.2°C (41.4°F) in November to a freezing cold -2°C (28.4°F). Throughout the December nights, Châteauguay encounters a low-temperature of -7.5°C (18.5°F).Humidity
In December, the average relative humidity is 86%.Rainfall
In Châteauguay, Canada, in December, it is raining for 9.3 days, with typically 61mm (2.4") of accumulated precipitation. In Châteauguay, during the entire year, the rain falls for 153.6 days and collects up to 759mm (29.88") of precipitation.Snowfall
Months with snowfall in Châteauguay are January through May, October through December. In December, it is snowing for 12.6 days. Throughout December, 159mm (6.26") of snow is accumulated. In Châteauguay, during the entire year, snow falls for 65.7 days and aggregates up to 843mm (33.19") of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Châteauguay.On the first day of December, sunrise is at 7:14 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 4:22 pm EST.
Sunshine
In December, the average sunshine is 3.4h.UV index
The months with the lowest UV index in Châteauguay, Canada, are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is it in Châteauguay in December?
What is the average humidity in December in Châteauguay?
How many days does it rain in December in Châteauguay?
How much does it snow in Châteauguay in December?
What is the month with the shortest days in Châteauguay?
How many hours of daylight does Châteauguay have in December?
What time are sunrise and sunset in December in Châteauguay?
How many hours of sunshine does Châteauguay have in December?
What is the month with the lowest UV index in Châteauguay?
What is the UV index reading in December in Châteauguay?
Average temperature in December
Châteauguay, Canada
- Average high temperature in December: -2°C
The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-5.6°C).
- Average low temperature in December: -7.5°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 (-12.7°C).
Average pressure in December
Châteauguay, Canada
- Average pressure in December: 1017.3mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).
Average wind speed in December
Châteauguay, Canada
- Average wind speed in December: 13.4km/h
The windiest months (with the highest average wind speed) are February and April (14.5km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).
Average humidity in December
Châteauguay, 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 (75%).
Average rainfall in December
Châteauguay, Canada
- Average rainfall in December: 61mm
The wettest month (with the highest rainfall) is May (77mm).
The driest months (with the least rainfall) are February and September (51mm).
Average rainfall days in December
Châteauguay, Canada
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Châteauguay, Canada
- Average snowfall in December: 159mm
The month with the highest snowfall is February (219mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Châteauguay, Canada
- Average snowfall days in December: 12.6 days
The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Châteauguay, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Châteauguay, Canada
- Average sunshine days in December: 13 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in December
Châteauguay, 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, November and December (UV index 1).
Average cloud cover in December
Châteauguay, Canada
- Average cloud cover in December: 64
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Châteauguay, Canada
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is January (7km).
Châteauguay, Canada
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