Climate and monthly weather forecastThornhill, Canada
Climate and monthly weather forecast
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 »Updated: Feb 5, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
January and February, with an average relative humidity of 85%, are most humid months.
In Thornhill, Canada, during the entire year, the rain falls for 136.9 days and collects up to 456mm (17.95") of precipitation.
January through April, October through December are months with snowfall in Thornhill, Canada.
In Thornhill, during the entire year, snow falls for 49.5 days and aggregates up to 317mm (12.48") of snow.
The month with the least sunshine in Thornhill is January, with an average of 3.1h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Thornhill, Canada.
The month with the least rainfall is February, when the rain falls for 4.6 days and typically collects 23mm (0.91") of precipitation.
February is the month with the most snowfall in Thornhill. Snow falls for 11 days and accumulates 82mm (3.23") of snow.
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.
The months with the lowest humidity in Thornhill are April, July and August, with an average relative humidity of 75%.
May through September are months without snowfall in Thornhill, Canada.
June has the longest days of the year, with an average of 15h and 24min of daylight.
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.
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.
July has the most sunshine of the year in Thornhill, Canada, with an average of 10.8h of sunshine.
With an average maximum UV index of 6, July is the month with the highest UV index in Thornhill, Canada.
With an average of 9h and 0min of daylight, December has the shortest days of the year in 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).
Average pressure
Thornhill, Canada
- Average pressure in January:
1017mbar - Average pressure in February:
1017mbar - Average pressure in March:
1018.3mbar - Average pressure in April:
1014.7mbar - Average pressure in May:
1015.3mbar - Average pressure in June:
1013.1mbar
- Average pressure in July:
1013.8mbar - Average pressure in August:
1014.5mbar - Average pressure in September:
1017mbar - Average pressure in October:
1015.4mbar - Average pressure in November:
1018.1mbar - Average pressure in December:
1017.4mbar
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
Thornhill, Canada
- Average wind speed in January:
17.8km/h - Average wind speed in February:
17.5km/h - Average wind speed in March:
16.3km/h - Average wind speed in April:
16.2km/h - Average wind speed in May:
12.6km/h - Average wind speed in June:
11.7km/h
- Average wind speed in July:
11km/h - Average wind speed in August:
11.5km/h - Average wind speed in September:
12.6km/h - Average wind speed in October:
15.7km/h - Average wind speed in November:
16.5km/h - Average wind speed in December:
17km/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
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%).
Average rainfall
Thornhill, Canada
The wettest month (with the highest rainfall) is July (60mm).
The driest month (with the least rainfall) is February (23mm).
Average rainfall days
Thornhill, Canada
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
9.6 days - Average rainfall days in April:
12 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
16.7 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
12.7 days - Average rainfall days in October:
13.6 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
7.1 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
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).
Average snowfall days
Thornhill, Canada
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
11 days - Average snowfall days in March:
8 days - Average snowfall days in April:
2.8 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.4 days - Average snowfall days in November:
5.7 days - Average snowfall days in December:
9.7 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 / Average sunshine
Thornhill, Canada
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 48min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 6min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
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 - Average sunshine in February:
3h and 18min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 30min - Average sunshine in May:
9h and 0min - Average sunshine in June:
9h and 48min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 30min - Average sunshine in September:
9h and 24min - Average sunshine in October:
4h and 48min - Average sunshine in November:
4h and 30min - Average sunshine in December:
3h and 30min
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
Thornhill, Canada
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
14.6 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
12.7 days - Average sunshine days in September:
15.5 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
15.6 days - Average sunshine days in December:
16.9 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
Thornhill, Canada
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
Thornhill, Canada
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
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).
