January weather forecastThornhill, Canada
January
Weather in January
January, the same as December, in Thornhill, Canada, is another subzero cold winter month, with an average temperature varying between -2.7°C (27.1°F) and -8°C (17.6°F).Temperature
The coldest month is January, with an average high-temperature of -2.7°C (27.1°F) and an average low-temperature of -8°C (17.6°F).Humidity
January and February, with an average relative humidity of 85%, are the most humid months in Thornhill.Rainfall
In January, the rain falls for 5.3 days. Throughout January, 29mm (1.14") of precipitation is accumulated. In Thornhill, during the entire year, the rain falls for 136.9 days and collects up to 456mm (17.95") of precipitation.Snowfall
January through April, October through December are months with snowfall in Thornhill. In Thornhill, in January, during 11.7 snowfall days, 80mm (3.15") of snow is typically accumulated. In Thornhill, during the entire year, snow falls for 49.5 days and aggregates up to 317mm (12.48") of snow.Daylight
In Thornhill, the average length of the day in January is 9h and 22min.On the first day of the month, sunrise is at 7:51 am and sunset at 4:50 pm. On the last day of January, in Thornhill, sunrise is at 7:35 am and sunset at 5:26 pm EST.
Sunshine
January has the least sunshine of the year, with an average of 3.1h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Thornhill. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 1 in January leads to these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Thornhill, Canada
- Average high temperature in January: -2.7°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 (-2.7°C).
- Average low temperature in January: -8°C
The month with the highest average low temperature is July (17.4°C).
The coldest month (with the lowest average low temperature) is January (-8°C).
Average pressure in January
Thornhill, Canada
- Average pressure in January: 1017mbar
The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).
Average wind speed in January
Thornhill, Canada
- Average wind speed in January: 17.8km/h
The windiest month (with the highest average wind speed) is January (17.8km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).
Average humidity in January
Thornhill, Canada
- Average humidity in January: 85%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in January
Thornhill, Canada
- Average rainfall in January: 29mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is February (23mm).
Average rainfall days in January
Thornhill, Canada
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in January
Thornhill, Canada
- Average snowfall in January: 80mm
The month with the highest snowfall is February (82mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in January
Thornhill, Canada
- Average snowfall days in January: 11.7 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Thornhill, Canada
- Average daylight in January: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 3h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in January
Thornhill, Canada
- Average sunshine days in January: 15.8 days
The month with the most sunshine days is December (16.9 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Thornhill, Canada
- Average UV index in January: 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 January
Thornhill, Canada
- Average cloud cover in January: 67
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in January
Thornhill, Canada
- Average visibility in January: 9km
The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (9km).
