December weather forecastThorold, Canada
December
Weather in December
The first month of the winter, December, is also an icy month in Thorold, Canada, with an average temperature ranging between max 2.4°C (36.3°F) and min -1.5°C (29.3°F).Temperature
The beginning of December marks a decrease in the average high-temperature, transitioning from a frosty 7.8°C (46°F) in November to an icy 2.4°C (36.3°F). A consistent nighttime average temperature of -1.5°C (29.3°F) is maintained in Thorold, Canada, during December.Humidity
The average relative humidity in December in Thorold is 80%.Rainfall
In Thorold, during December, the rain falls for 11.8 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Thorold, there are 177.2 rainfall days, and 786mm (30.94") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Thorold. In Thorold, in December, snow falls for 12.5 days, with typically accumulated 76mm (2.99") of snow. In Thorold, during the entire year, snow falls for 58.5 days and aggregates up to 403mm (15.87") of snow.Sea temperature
In Thorold, Canada, the average seawater temperature in December is 4.9°C (40.8°F).Note: In swimming scenarios, this situation is extremely cold, fraught with danger, and poses a significant life risk. Absent insulated waterproof clothing, hypothermia strikes quickly.
Daylight
The month with the shortest days in Thorold is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:29 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:48 am and sunset at 4:51 pm EST.
Sunshine
In Thorold, the average sunshine in December is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Thorold, Canada
- Average high temperature in December: 2.4°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-1.4°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).
Average pressure in December
Thorold, Canada
- Average pressure in December: 1017.7mbar
The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in December
Thorold, Canada
- Average wind speed in December: 19.7km/h
The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).
Average humidity in December
Thorold, Canada
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).
Average rainfall in December
Thorold, Canada
- Average rainfall in December: 56mm
The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).
Average rainfall days in December
Thorold, Canada
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in December
Thorold, Canada
- Average snowfall in December: 76mm
The month with the highest snowfall is February (127mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Thorold, Canada
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Thorold, Canada
- Average sea temperature in December: 4.9°C
The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest month (with the lowest average sea temperature) is February (1.7°C).
Average daylight in December /
Average sunshine in December
Thorold, Canada
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Thorold, Canada
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).
Average UV index in December
Thorold, Canada
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Thorold, Canada
- Average cloud cover in December: 66
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Thorold, Canada
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).
