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
December
Weather in December
Temperature
The commencement of December indicates a shift in the average high-temperature, receding from November's icy 4°C (39.2°F) to a subzero cold -2.7°C (27.1°F). The average temperature during December nights dips to -8.5°C (16.7°F).Humidity
In December, the average relative humidity is 88%.Rainfall
In Ayer's Cliff, in December, it is raining for 7.4 days, with typically 39mm (1.54") of accumulated precipitation. In Ayer's Cliff, during the entire year, the rain falls for 143.2 days and collects up to 535mm (21.06") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Ayer's Cliff, during December, snow falls for 20 days and regularly aggregates up to 156mm (6.14") of snow. Throughout the year, there are 103.3 snowfall days, and 1035mm (40.75") of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Ayer's Cliff.On the first day of December, sunrise is at 7:07 am and sunset at 4:07 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:16 pm EST.
Sunshine
In Ayer's Cliff, the average sunshine in December is 2.8h.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Ayer's Cliff?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Ayer's Cliff, Canada
- Average high temperature in December: -2.7°C
The warmest month (with the highest average high temperature) is July (24.9°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in December: -8.5°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-13.3°C).
Average pressure in December
Ayer's Cliff, Canada
- Average pressure in December: 1017.2mbar
The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).
Average wind speed in December
Ayer's Cliff, Canada
- Average wind speed in December: 11.2km/h
The windiest month (with the highest average wind speed) is April (12.3km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in December
Ayer's Cliff, Canada
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Ayer's Cliff, Canada
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is June (61mm).
The driest month (with the least rainfall) is February (35mm).
Average rainfall days in December
Ayer's Cliff, Canada
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in December
Ayer's Cliff, Canada
- Average snowfall in December: 156mm
The month with the highest snowfall is February (234mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Ayer's Cliff, Canada
- Average snowfall days in December: 20 days
The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ayer's Cliff, 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: 2h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 2h and 12min).
Average sunshine days in December
Ayer's Cliff, Canada
- Average sunshine days in December: 7.8 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is February (6.4 days).
Average UV index in December
Ayer's Cliff, Canada
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in December
Ayer's Cliff, Canada
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 79).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Ayer's Cliff, Canada
- Average visibility in December: 7km
The months with the highest visibility are April, May, June, July, August, September, October and November (8km).
The months with the lowest visibility are January and February (6km).
