Waterloo
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Waterloo, Canada

The first month of the autumn, September, is still a pleasant month in Waterloo, Canada, with average temperature fluctuating between 20.4°C (68.7°F) and 8.6°C (47.5°F).

Temperature

In September, the average high-temperature marginally drops, from a moderately hot 24.8°C (76.6°F) in August, to a pleasant 20.4°C (68.7°F). The average low-temperature, in Waterloo, is 8.6°C (47.5°F).

Humidity

The most humid month in Waterloo, Canada, is September, with an average relative humidity of 94.3%.

Rainfall

In Waterloo, in September, during 12.2 rainfall days, 87.8mm (3.5") of precipitation is typically accumulated. Throughout the year, there are 119.1 rainfall days, and 776.8mm (30.6") of precipitation is accumulated.

Snowfall

In Waterloo, in September, it doesn't snow. In October, it regularly snows. In Waterloo, during the entire year, snow aggregates up to 1597.8mm (62.9").

Daylight

The average length of the day in September in Waterloo is 12.5h.

What is the temperature in September in Waterloo?

In September, in Waterloo, the average high-temperature is 20.4°C (68.7°F), and the average low-temperature is 8.6°C (47.5°F).

What is the most humid month in Waterloo?

September is the most humid month in Waterloo, Canada, with an average relative humidity of 94.3%.

What is the average humidity in September in Waterloo?

In Waterloo, Canada, the average relative humidity in September is 94.3%.

How many days does it rain in September in Waterloo?

In September, the rain falls for 12.2 days. Throughout September, 87.8mm (3.5") of precipitation is accumulated.

Does it snow in Waterloo in September?

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

What is the average length of the day in September in Waterloo?

In September, the average length of the day in Waterloo is 12.5h.
Average temperature in September - Waterloo, Canada
  • Average high temperature in September: 20.4°C

The warmest month (with the highest average high temperature) is July (26°C).
The month with the lowest average high temperature is January (-2.6°C).

  • Average low temperature in September: 8.6°C

The month with the highest average low temperature is July (14°C).
The coldest month (with the lowest average low temperature) is January (-10.3°C).

Average humidity in September - Waterloo, Canada
  • Average humidity in September: 94.3%

The month with the highest relative humidity is September (94.3%).
The month with the lowest relative humidity is February (83.4%).

Average rainfall in September - Waterloo, Canada
  • Average rainfall in September: 87.8mm

The wettest month (with the highest rainfall) is July (98.6mm).
The driest month (with the lowest rainfall) is January (28.7mm).

Average rainfall days in September - Waterloo, Canada
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is October (13.7 days).
The month with the lowest number of rainy days is February (5 days).

Average snowfall in September - Waterloo, Canada
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (437mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in September - Waterloo, Canada
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (16.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in September - Waterloo, 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).