Edmonton
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Edmonton, Canada

The Saskatchewan River below the James Macdonald Bridge, with a distant view of Edmonton City, Canada, under the colorful sunset sky
The Saskatchewan River below the James Macdonald Bridge, with a distant view of Edmonton City, Canada, under the colorful sunset sky
The first month of the autumn, September, is still a comfortable month in Edmonton, Canada, with average temperature fluctuating between 17.1°C (62.8°F) and 5.8°C (42.4°F).

Temperature

In Edmonton, the average high-temperature in September drops, from a pleasant 22.6°C (72.7°F) in August, to an enjoyable 17.1°C (62.8°F). In September, the average low-temperature is 5.8°C (42.4°F).

Humidity

In Edmonton, the average relative humidity is 50.1%.

Rainfall

In Edmonton, in September, it is raining for 9.6 days, with typically 42.4mm (1.7") of accumulated precipitation. In Edmonton, during the entire year, the rain falls for 77.1 days and collects up to 347.7mm (13.7") of precipitation.

Snowfall

January through May, September through December are months with snowfall in Edmonton. September is the first month it typically snows in Edmonton. Throughout September, in the average 0.5 snowfall days, it receives 10mm (0.4") of snow. Throughout the year, in Edmonton, Canada, there are 52.4 snowfall days, and 1236mm (48.7") of snow is accumulated.

Daylight

The average length of the day in September is 12.7h.

Sunshine

The average sunshine in September is 6.4h.

UV index

In Edmonton, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in September in Edmonton?

The average high-temperature, in September, is 17.1°C (62.8°F), while the average low-temperature is 5.8°C (42.4°F).

What is the average humidity in September in Edmonton?

The average relative humidity in September is 50.1%.

How much does it rain in Edmonton in September?

In Edmonton, Canada, in September, it is raining for 9.6 days, with typically 42.4mm (1.7") of accumulated precipitation.

When does it start snowing in Edmonton?

September is the first month it typically snows in Edmonton. Throughout September, in the average 0.5 snowfall days, it receives 10mm (0.4") of snow.

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

In Edmonton, Canada, the average length of the day in September is 12.7h.

How many hours of sunshine does Edmonton have in September?

In September, the average sunshine is 6.4h.

What is the UV index intensity in September in Edmonton?

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.
Average temperature in September - Edmonton, Canada
  • Average high temperature in September: 17.1°C

The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (-6°C).

  • Average low temperature in September: 5.8°C

The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-14.8°C).

Average humidity in September - Edmonton, Canada
  • Average humidity in September: 50.1%

The month with the highest relative humidity is December (65.4%).
The month with the lowest relative humidity is May (40.4%).

Average rainfall in September - Edmonton, Canada
  • Average rainfall in September: 42.4mm

The wettest month (with the highest rainfall) is July (93.8mm).
The driest month (with the lowest rainfall) is December (0.7mm).

Average rainfall days in September - Edmonton, Canada
  • Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is July (14.6 days).
Months with the lowest number of rainy days are February and December (0.8 days).

Average snowfall in September - Edmonton, Canada
  • Average snowfall in September: 10mm

The month with the highest snowfall is January (245mm).
Months with the lowest snowfall are June, July and August (0mm).

Average snowfall days in September - Edmonton, Canada
  • Average snowfall days in September: 0.5 days

The month with the highest number of snowfall days is January (10.7 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in September / Average sunshine in September - Edmonton, Canada
  • Average daylight in September: 12.7h

The month with the longest days is June (Average daylight: 16.9h).
The month with shortest days is December (Average daylight: 7.6h).

  • Average sunshine in September: 6.4h

The month with most sunshine is July (Average sunshine: 9.9h).
The month with least sunshine is December (Average sunshine: 2.7h).

Average UV index in September - Edmonton, Canada
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).