Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The shift from March to April sees an increase in the average high-temperature, transitioning from a wintry 2.9°C (37.2°F) to a frosty 9.3°C (48.7°F). Thornhill experiences an average low-temperature of 2.4°C (36.3°F) in the month of April.Humidity
The months with the lowest humidity are April, July and August, with an average relative humidity of 75%.Rainfall
In Thornhill, Canada, in April, it is raining for 12 days, with typically 40mm (1.57") of accumulated precipitation. In Thornhill, during the entire year, the rain falls for 136.9 days and collects up to 456mm (17.95") of precipitation.Snowfall
Months with snowfall in Thornhill are January through April, October through December. April is the last month it regularly snows. During 2.8 snowfall days, in April, Thornhill aggregates 21mm (0.83") of snow. Throughout the year, there are 49.5 snowfall days, and 317mm (12.48") of snow is accumulated.Daylight
In April, the average length of the day in Thornhill, Canada, is 13h and 28min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:45 pm. On the last day of April, sunrise is at 6:10 am and sunset at 8:19 pm EDT.
Sunshine
In Thornhill, the average sunshine in April is 7.5h.UV index
The average daily maximum UV index in April in Thornhill is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 3 during April leads to these advisories:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What are April temperatures in Thornhill?
What is the least humid month in Thornhill?
What is the average humidity in April in Thornhill?
How many days does it rain in April in Thornhill?
What is the last month it snows in Thornhill?
How many hours of daylight does Thornhill have in April?
When are sunrise and sunset in April in Thornhill?
How long on average sun shines in April in Thornhill?
What is the UV index intensity in April in Thornhill?
Average temperature in April
Thornhill, Canada
- Average high temperature in April: 9.3°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 April: 2.4°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 April
Thornhill, Canada
- Average pressure in April: 1014.7mbar
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 April
Thornhill, Canada
- Average wind speed in April: 16.2km/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 April
Thornhill, Canada
- Average humidity in April: 75%
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 April
Thornhill, Canada
- Average rainfall in April: 40mm
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is February (23mm).
Average rainfall days in April
Thornhill, Canada
- Average rainfall days in April: 12 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 April
Thornhill, Canada
- Average snowfall in April: 21mm
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 April
Thornhill, Canada
- Average snowfall days in April: 2.8 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 April /
Average sunshine in April
Thornhill, Canada
- Average daylight in April: 13h and 3min
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 April: 7h and 3min
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 April
Thornhill, Canada
- Average sunshine days in April: 14.6 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 April
Thornhill, Canada
- Average UV index in April: 3
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 April
Thornhill, Canada
- Average cloud cover in April: 50
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 April
Thornhill, Canada
- Average visibility in April: 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).
Thornhill, Canada
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