Jasper
Canada
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Jasper, Canada

September, the first month of the autumn, in Jasper, is still a mild month, with temperature in the range of an average high of 15°C (59°F) and an average low of 1°C (33.8°F).

Temperature

In Jasper, the average high-temperature decreases, from an agreeable 20°C (68°F) in August, to a mild 15°C (59°F). In September, in Jasper, the average low-temperature is 1°C (33.8°F).

Rainfall

In Jasper, during 12 rainfall days, 52mm (2") of precipitation is typically accumulated. Throughout the year, there are 133 rainfall days, and 567mm (22.3") of precipitation is accumulated.

Daylight

In Jasper, the average length of the day in September is 12.6h.

Sunshine

In September, the average sunshine is 5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
The daily maximum UV index of 4 in September 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.

What is the temperature in September in Jasper?

In September, in Jasper, the average high-temperature is 15°C (59°F), and the average low-temperature is 1°C (33.8°F).

How many days does it rain in September in Jasper?

In Jasper, during September, the rain falls for 12 days and regularly aggregates up to 52mm (2") of precipitation.

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

The average length of the day in September in Jasper is 12.6h.

How many hours of sunshine does Jasper have in September?

In September, the average sunshine in Jasper, Canada, is 5h.

What is the UV index intensity in September in Jasper?

In September, the average daily maximum UV index in Jasper, Canada, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Jasper, Canada
  • Average high temperature in September: 15°C

The warmest month (with the highest average high temperature) is July (21°C).
Months with the lowest average high temperature are January and December (-6°C).

  • Average low temperature in September: 1°C

The month with the highest average low temperature is July (6°C).
The coldest month (with the lowest average low temperature) is January (-17°C).

Average rainfall in September - Jasper, Canada
  • Average rainfall in September: 52mm

The wettest month (with the highest rainfall) is July (69mm).
The driest month (with the lowest rainfall) is April (29mm).

Average rainfall days in September - Jasper, Canada
  • Average rainfall days in September: 12 days

Months with the highest number of rainy days are June, July and August (14 days).
The month with the lowest number of rainy days is April (8 days).

Average daylight in September / Average sunshine in September - Jasper, Canada
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.8h).
The month with shortest days is December (Average daylight: 7.7h).

  • Average sunshine in September: 5h

Months with most sunshine are June and July (Average sunshine: 8h).
Months with least sunshine are January and December (Average sunshine: 2).

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

Months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 0).