Richmond Hill
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Richmond Hill, Canada

September, the first month of the autumn, in Richmond Hill, is still a pleasant month, with average temperature ranging between min 10.8°C (51.4°F) and max 20.9°C (69.6°F).

Temperature

In Richmond Hill, the average high-temperature in September slightly decreases, from a moderately hot 25.6°C (78.1°F) in August, to a pleasant 20.9°C (69.6°F). In Richmond Hill, Canada, the average low-temperature is 10.8°C (51.4°F).

Rainfall

In Richmond Hill, it is raining for 12.4 days, with typically 88.4mm (3.5") of accumulated precipitation. Throughout the year, in Richmond Hill, Canada, there are 120.4 rainfall days, and 744.6mm (29.3") of precipitation is accumulated.

Snowfall

In Richmond Hill snow does not fall in June through September.

Daylight

In Richmond Hill, the average length of the day in September is 12.5h.

What is the temperature in September in Richmond Hill?

In September, in Richmond Hill, Canada, the average high-temperature is 20.9°C (69.6°F), and the average low-temperature is 10.8°C (51.4°F).

How much does it rain in Richmond Hill in September?

In Richmond Hill, Canada, in September, during 12.4 rainfall days, 88.4mm (3.5") of precipitation is typically accumulated.

Does it snow in Richmond Hill in September?

In Richmond Hill, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Richmond Hill?

June through September are months without snowfall in Richmond Hill.

What is the average length of the day in September in Richmond Hill?

In September, the average length of the day in Richmond Hill is 12.5h.
Average temperature in September - Richmond Hill, Canada
  • Average high temperature in September: 20.9°C

The warmest month (with the highest average high temperature) is July (26.8°C).
The month with the lowest average high temperature is January (-2.2°C).

  • Average low temperature in September: 10.8°C

The month with the highest average low temperature is July (15.9°C).
The coldest month (with the lowest average low temperature) is January (-10.2°C).

Average rainfall in September - Richmond Hill, Canada
  • Average rainfall in September: 88.4mm

The wettest month (with the highest rainfall) is August (89.2mm).
The driest month (with the lowest rainfall) is January (25.2mm).

Average rainfall days in September - Richmond Hill, Canada
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is May (13.6 days).
The month with the lowest number of rainy days is February (4.3 days).

Average snowfall in September - Richmond Hill, Canada
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (371mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in September - Richmond Hill, Canada
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.3 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in September - Richmond Hill, Canada
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).