September weather forecastJasper, Canada
September
Weather in September
September commences a transition period in Jasper, with the first signs of autumn colouring the city's skyline. Comparatively, a marked decrease in temperature from 17.2°C (63°F) in August to 11.3°C (52.3°F) is detectable, signaling the twilight of summer. City dwellers start to prepare for the forthcoming colder months, as daylight hours shorten and the first snow of the season subtly dusts the higher peaks. Hailed as an ideal time for wildlife viewing and leaf peeping, Jasper's September weather offers a unique combination of crisp air and vibrant landscape hues, producing picture-perfect panoramas.Temperature
September in Jasper implies a gentle temperature shift, with average high-temperatures reducing from August's comfortable 17.2°C (63°F) to a cool 11.3°C (52.3°F). The average temperature during September nights dips to a wintry 2.1°C (35.8°F).Humidity
In Jasper, the average relative humidity in September is 71%.Rainfall
In Jasper, during September, the rain falls for 15.9 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, in Jasper, there are 181.8 rainfall days, and 570mm (22.44") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 1.5 snowfall days, it receives 26mm (1.02") of snow. In Jasper, during the entire year, snow falls for 135.5 days and aggregates up to 1709mm (67.28") of snow.Daylight
The average length of the day in September is 12h and 39min.On the first day of September, sunrise is at 7:04 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 7:30 pm MDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Jasper, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the UV index of 2 transforms into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Jasper, Canada
- Average high temperature in September: 11.3°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is December (-8.2°C).
- Average low temperature in September: 2.1°C
The month with the highest average low temperature is July (6.1°C).
The coldest month (with the lowest average low temperature) is February (-16.6°C).
Average pressure in September
Jasper, Canada
- Average pressure in September: 1014.5mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).
Average wind speed in September
Jasper, Canada
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is November (10.4km/h).
The calmest month (with the lowest average wind speed) is May (7.6km/h).
Average humidity in September
Jasper, Canada
- Average humidity in September: 71%
The months with the highest relative humidity are January, February and December (92%).
The month with the lowest relative humidity is August (64%).
Average rainfall in September
Jasper, Canada
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is June (83mm).
The driest month (with the least rainfall) is December (27mm).
Average rainfall days in September
Jasper, Canada
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is June (21.4 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in September
Jasper, Canada
- Average snowfall in September: 26mm
The month with the highest snowfall is March (274mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Jasper, Canada
- Average snowfall days in September: 1.5 days
The month with the highest number of snowfall days is March (22.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Jasper, Canada
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 8h and 42min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Jasper, Canada
- Average sunshine days in September: 12 days
The month with the most sunshine days is September (12 days).
The month with the least sunshine days is April (4.4 days).
Average UV index in September
Jasper, Canada
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, March and November (UV index 1).
Average cloud cover in September
Jasper, Canada
- Average cloud cover in September: 34
The months with the most cloud cover are January and March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Jasper, Canada
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January, February and March (6km).
