Climate and monthly weather forecast
Thornhill, Canada

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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). 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). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Thornhill, Canada, with temperature in the range of an average low of -7.7°C (18.1°F) and an average high of -2.3°C (27.9°F). As Thornhill steps into February, the average high-temperature holds at a still subzero cold -2.3°C (27.9°F), hinting at a minor fluctuation from the prior month. Weather in February »

Weather in March

March, the first month of the spring in Thornhill, is a wintry month, with an average temperature fluctuating between 2.9°C (37.2°F) and -2.9°C (26.8°F). The shift into March brings an increase in the average high-temperature, moving from a subzero cold -2.3°C (27.9°F) in February to a cold 2.9°C (37.2°F). Weather in March »

Weather in April

April is a frosty spring month in Thornhill, Canada, with an average temperature fluctuating between 9.3°C (48.7°F) and 2.4°C (36.3°F). 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). Weather in April »

Weather in May

The last month of the spring, May, is a refreshing month in Thornhill, Canada, with temperature in the range of an average high of 16.3°C (61.3°F) and an average low of 8.5°C (47.3°F). May's arrival signals an increase in average high-temperatures, moving from April's frosty 9.3°C (48.7°F) to an enjoyable 16.3°C (61.3°F). Weather in May »

Weather in June

The first month of the summer, June, is a pleasant month in Thornhill, Canada, with an average temperature ranging between max 21.1°C (70°F) and min 13.3°C (55.9°F). As May gives way to June, the average high-temperature displays a slight ascent, adjusting from an enjoyable 16.3°C (61.3°F) to a pleasant 21.1°C (70°F). Weather in June »

Weather in July

July is a warm summer month in Thornhill, Canada, with an average temperature varying between 17.4°C (63.3°F) and 25.1°C (77.2°F). Thornhill's temperatures peak on average in July, reaching 25.1°C (77.2°F) at their highest and 17.4°C (63.3°F) at their lowest. Weather in July »

Weather in August

August, the last month of the summer in Thornhill, is another warm month, with an average temperature varying between 17.2°C (63°F) and 24.6°C (76.3°F). August's arrival brings an average high-temperature of a still moderately hot 24.6°C (76.3°F), slightly deviating from July's 25.1°C (77.2°F). Weather in August »

Weather in September

The first month of the autumn, September, is also an agreeable month in Thornhill, Canada, with an average temperature ranging between max 20.7°C (69.3°F) and min 13.6°C (56.5°F). September's onset brings a negligible change in high-temperatures, falling from a moderately hot 24.6°C (76.3°F) in August to an agreeable 20.7°C (69.3°F). Weather in September »

Weather in October

October, like September, is another refreshing autumn month in Thornhill, Canada, with temperature in the range of an average low of 7.9°C (46.2°F) and an average high of 13.4°C (56.1°F). Welcoming October, Thornhill observes a shift in the average high-temperature, falling from September's agreeable 20.7°C (69.3°F) to a moderate 13.4°C (56.1°F). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Thornhill, Canada, with an average temperature varying between 1.4°C (34.5°F) and 6.5°C (43.7°F). The transition into November is accompanied by a temperature decrease, with the average high-temperature shifting from a moderate 13.4°C (56.1°F) in October to a frosty 6.5°C (43.7°F). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Thornhill, Canada, with an average temperature ranging between max 0.7°C (33.3°F) and min -3.5°C (25.7°F). As Thornhill enters December, the average high-temperature decreases from the a frosty 6.5°C (43.7°F) of November to an icy 0.7°C (33.3°F). Weather in December »
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Frequently asked questions

What are the coldest months in Thornhill?

Thornhill records the coldest temperatures in January, averaging a high of -2.7°C (27.1°F) and a low of -8°C (17.6°F).

What is the most humid month in Thornhill?

January and February, with an average relative humidity of 85%, are most humid months.

How much does it rain in Thornhill?

In Thornhill, Canada, during the entire year, the rain falls for 136.9 days and collects up to 456mm (17.95") of precipitation.

When does it snow in Thornhill?

January through April, October through December are months with snowfall in Thornhill, Canada.

How many days does it snow in Thornhill?

In Thornhill, during the entire year, snow falls for 49.5 days and aggregates up to 317mm (12.48") of snow.

What is the month with the least sunshine in Thornhill?

The month with the least sunshine in Thornhill is January, with an average of 3.1h of sunshine.

What is the month with the lowest UV index in Thornhill?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Thornhill, Canada.

What is the driest month in Thornhill?

The month with the least rainfall is February, when the rain falls for 4.6 days and typically collects 23mm (0.91") of precipitation.

When does it snow the most in Thornhill?

February is the month with the most snowfall in Thornhill. Snow falls for 11 days and accumulates 82mm (3.23") of snow.

When is Daylight Saving Time (DST) in Thornhill?

On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 2:00 am, and the time zone reverts from EDT to EST.

What is the least humid month in Thornhill?

The months with the lowest humidity in Thornhill are April, July and August, with an average relative humidity of 75%.

When it does not snow in Thornhill?

May through September are months without snowfall in Thornhill, Canada.

When are the longest days in Thornhill?

June has the longest days of the year, with an average of 15h and 24min of daylight.

What is the hottest time of year in Thornhill?

July, recording an average high temperature of 25.1°C (77.2°F) and a low temperature of 17.4°C (63.3°F), is Thornhill's warmest month.

What is the rainiest month in Thornhill?

The month with the most rainfall in Thornhill, Canada, is July, when the rain falls for 16.7 days and typically aggregates up to 60mm (2.36") of precipitation.

What month has the most sunshine in Thornhill?

July has the most sunshine of the year in Thornhill, Canada, with an average of 10.8h of sunshine.

What is the month with the highest UV index in Thornhill?

With an average maximum UV index of 6, July is the month with the highest UV index in Thornhill, Canada.

What is the month with the shortest days in Thornhill?

With an average of 9h and 0min of daylight, December has the shortest days of the year in Thornhill, Canada.

Average temperature
Thornhill, Canada

Average temperature - Thornhill, Canada

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).

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).

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Average pressure
Thornhill, Canada

Average pressure - Thornhill, Canada

The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013.1mbar).

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Average wind speed
Thornhill, Canada

Average wind speed - Thornhill, Canada

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).

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Average humidity
Thornhill, Canada

Average humidity - Thornhill, Canada

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%).

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Average rainfall
Thornhill, Canada

Average rainfall - Thornhill, Canada

The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is February (23mm).

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Average rainfall days
Thornhill, Canada

Average rainfall days - Thornhill, Canada

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).

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Average snowfall
Thornhill, Canada

Average snowfall - Thornhill, Canada

The month with the highest snowfall is February (82mm).
The months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days
Thornhill, Canada

Average snowfall days - Thornhill, Canada

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).

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Average daylight / Average sunshine
Thornhill, Canada

Average daylight / Average sunshine - Thornhill, Canada

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).

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).

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Average sunshine days
Thornhill, Canada

Average sunshine days - Thornhill, Canada

The month with the most sunshine days is December (16.9 days).
The month with the least sunshine days is July (10.8 days).

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Average visibility
Thornhill, Canada

Average visibility - Thornhill, Canada

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).

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Thornhill, Canada

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