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 is characterized by a reduction in the average high-temperature, from a chilly 6°C (42.8°F) in November to a subzero cold -0.8°C (30.6°F). Smiths Falls experiences an average low-temperature of -6.1°C (21°F) in the month of December.Humidity
In December, the average relative humidity is 86%.Rainfall
In Smiths Falls, Canada, during December, the rain falls for 9 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Smiths Falls, Canada, there are 141.7 rainfall days, and 669mm (26.34") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Smiths Falls, Canada, in December, during 11.4 snowfall days, 126mm (4.96") of snow is typically accumulated. In Smiths Falls, during the entire year, snow falls for 56.1 days and aggregates up to 622mm (24.49") of snow.Daylight
December has the shortest days of the year in Smiths Falls, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 4:24 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:32 pm EST.
Sunshine
In December, the average sunshine is 3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, the UV index of 1 transforms into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Smiths Falls in December?
What is the average humidity in December in Smiths Falls?
How many days does it rain in December in Smiths Falls?
How many days does it snow in December in Smiths Falls?
What is the month with the shortest days in Smiths Falls?
How many hours of daylight does Smiths Falls have in December?
When is the sunrise / sunset in December in Smiths Falls?
How many hours of sunshine does Smiths Falls have in December?
What are the months with the lowest UV index in Smiths Falls?
What is the UV index intensity in December in Smiths Falls?
Average temperature in December
Smiths Falls, Canada
- Average high temperature in December: -0.8°C
The warmest month (with the highest average high temperature) is July (25.1°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in December: -6.1°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-11.8°C).
Average pressure in December
Smiths Falls, Canada
- Average pressure in December: 1017.4mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1012.7mbar).
Average wind speed in December
Smiths Falls, Canada
- Average wind speed in December: 13.8km/h
The windiest month (with the highest average wind speed) is February (14.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity in December
Smiths Falls, Canada
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Smiths Falls, Canada
- Average rainfall in December: 56mm
The wettest month (with the highest rainfall) is August (70mm).
The driest months (with the least rainfall) are March and November (43mm).
Average rainfall days in December
Smiths Falls, Canada
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Smiths Falls, Canada
- Average snowfall in December: 126mm
The month with the highest snowfall is February (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Smiths Falls, Canada
- Average snowfall days in December: 11.4 days
The months with the highest number of snowfall days are January and February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Smiths Falls, Canada
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in December
Smiths Falls, Canada
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in December
Smiths Falls, 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 and December (UV index 1).
Average cloud cover in December
Smiths Falls, Canada
- Average cloud cover in December: 68
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Smiths Falls, Canada
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January, February, March and December (8km).
Smiths Falls, Canada
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