Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
Onset of September comes with a temperature decline, the average high falling from a wintry 2.6°C (36.7°F) in August to a subzero cold -4.3°C (24.3°F). The nights of September anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of -8°C (17.6°F).Humidity
In September, the average relative humidity in Isachsen, Canada, is 93%.Rainfall
In Isachsen, in September, during 2 rainfall days, 20mm (0.79") of precipitation is typically accumulated. Throughout the year, in Isachsen, there are 27.5 rainfall days, and 124mm (4.88") of precipitation is accumulated.Snowfall
Months with snowfall in Isachsen are January through December. The month with the most snowfall in Isachsen, Canada, is September, when snow falls for 18.8 days and typically aggregates up to 112mm (4.41") of snow.Daylight
The month with the longest days is September, with an average of 14h and 30min of daylight.On the first day of September, sunrise is at 3:30 am and sunset at 10:17 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:56 pm MDT.
Sunshine
With an average of 2.6h of sunshine, September has the most sunshine of the year in Isachsen, Canada.UV index
January through March, May, August through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 1 during September leads to these instructions:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is September in Isachsen?
What is the average humidity in September in Isachsen?
How much does it rain in Isachsen in September?
What is the snowiest month in Isachsen?
How many days does it snow in September in Isachsen?
When are the longest days in Isachsen?
How many hours of daylight does Isachsen have in September?
When are sunrise and sunset in September in Isachsen?
What month has the most sunshine in Isachsen?
How long on average sun shines in September in Isachsen?
What are the months with the lowest UV index in Isachsen?
What is the UV index intensity in September in Isachsen?
Average temperature in September
Isachsen, Canada
- Average high temperature in September: -4.3°C
The warmest month (with the highest average high temperature) is July (4.8°C).
The month with the lowest average high temperature is February (-28.8°C).
- Average low temperature in September: -8°C
The month with the highest average low temperature is July (2.1°C).
The coldest month (with the lowest average low temperature) is February (-33°C).
Average pressure in September
Isachsen, Canada
- Average pressure in September: 1010.1mbar
The month with the highest atmospheric pressure is May (1019.8mbar).
The month with the lowest atmospheric pressure is September (1010.1mbar).
Average wind speed in September
Isachsen, Canada
- Average wind speed in September: 17.1km/h
The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is November (15.4km/h).
Average humidity in September
Isachsen, Canada
- Average humidity in September: 93%
The months with the highest relative humidity are January and February (98%).
The month with the lowest relative humidity is July (80%).
Average rainfall in September
Isachsen, Canada
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is August (28mm).
The driest months (with the least rainfall) are January and February (3mm).
Average rainfall days in September
Isachsen, Canada
- Average rainfall days in September: 2 days
The month with the highest number of rainy days is August (8.9 days).
The month with the least rainy days is November (0 days).
Average snowfall in September
Isachsen, Canada
- Average snowfall in September: 112mm
The month with the highest snowfall is September (112mm).
The month with the least snowfall is January (21mm).
Average snowfall days in September
Isachsen, Canada
- Average snowfall days in September: 18.8 days
The month with the highest number of snowfall days is September (18.8 days).
The month with the least snowfall days is July (5.7 days).
Average daylight in September /
Average sunshine in September
Isachsen, Canada
- Average daylight in September: 14h and 3min
The month with the longest days is September (Average daylight: 14h and 30min).
The months with the shortest days are January, May, June, July, November and December (Average daylight: 0h and 0min).
- Average sunshine in September: 2h and 4min
The month with the most sunshine is September (Average sunshine: 2h and 36min).
The months with the least sunshine are January and November (Average sunshine: 0h and 6min).
Average sunshine days in September
Isachsen, Canada
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is March (22.7 days).
The month with the least sunshine days is September (9.8 days).
Average UV index in September
Isachsen, Canada
- Average UV index in September: 1
The months with the highest UV index are April, June and July (UV index 2).
The months with the lowest UV index are January, February, March, May, August, September, October, November and December (UV index 1).
Average cloud cover in September
Isachsen, Canada
- Average cloud cover in September: 85
The month with the most cloud cover is February (Cloud cover 93).
The month with the least cloud cover is July (Cloud cover 61).
Average visibility in September
Isachsen, Canada
- Average visibility in September: 7km
The months with the highest visibility are June, July and August (9km).
The months with the lowest visibility are February, March, October and December (6km).
