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
The shift from August to September corresponds with a decrease in the average high-temperature, down to a chilly 9.4°C (48.9°F) from an enjoyable 16.7°C (62.1°F). Déline experiences a mean temperature of 3.5°C (38.3°F) during September nights.Humidity
In Déline, Canada, the average relative humidity in September is 75%.Rainfall
In September, the rain falls for 8.1 days. Throughout September, 17mm (0.67") of precipitation is accumulated. Throughout the year, there are 59.1 rainfall days, and 185mm (7.28") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, August through December. In September, it is snowing for 3 days. Throughout September, 28mm (1.1") of snow is accumulated. Throughout the year, there are 118.5 snowfall days, and 664mm (26.14") of snow is accumulated.Daylight
In Déline, the average length of the day in September is 13h and 1min.On the first day of September in Déline, sunrise is at 6:55 am and sunset at 9:31 pm. On the last day of the month, sunrise is at 8:23 am and sunset at 7:43 pm MDT.
Sunshine
The average sunshine in September is 6.4h.UV index
January through April, September through December, with an average maximum UV index of 1, are months with the lowest UV index in Déline, Canada. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 1 translates into these guidelines:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Déline?
What is the average humidity in September in Déline?
How much does it rain in Déline in September?
How much does it snow in Déline in September?
How many hours of daylight does Déline have in September?
What time are sunrise and sunset in September in Déline?
How many hours of sunshine does Déline have in September?
When is the lowest UV index in Déline?
What is the UV index reading in September in Déline?
Average temperature in September
Déline, Canada
- Average high temperature in September: 9.4°C
The warmest month (with the highest average high temperature) is July (19.9°C).
The month with the lowest average high temperature is January (-20.2°C).
- Average low temperature in September: 3.5°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is January (-26.1°C).
Average pressure in September
Déline, Canada
- Average pressure in September: 1010.5mbar
The months with the highest atmospheric pressure are January and February (1019.9mbar).
The month with the lowest atmospheric pressure is August (1010.4mbar).
Average wind speed in September
Déline, Canada
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is May (12.3km/h).
The calmest month (with the lowest average wind speed) is March (10.9km/h).
Average humidity in September
Déline, Canada
- Average humidity in September: 75%
The months with the highest relative humidity are January, February and December (96%).
The month with the lowest relative humidity is June (51%).
Average rainfall in September
Déline, Canada
- Average rainfall in September: 17mm
The wettest months (with the highest rainfall) are July and August (29mm).
The driest months (with the least rainfall) are February and March (7mm).
Average rainfall days in September
Déline, Canada
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is July (12 days).
The month with the least rainy days is February (0.5 days).
Average snowfall in September
Déline, Canada
- Average snowfall in September: 28mm
The month with the highest snowfall is November (123mm).
The months with the least snowfall are June and July (0mm).
Average snowfall days in September
Déline, Canada
- Average snowfall days in September: 3 days
The month with the highest number of snowfall days is December (17.4 days).
The months with the least snowfall days are June and July (0 days).
Average daylight in September /
Average sunshine in September
Déline, Canada
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 54min).
The month with the shortest days is December (Average daylight: 3h and 48min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Déline, Canada
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is June (21.3 days).
The month with the least sunshine days is October (14.5 days).
Average UV index in September
Déline, Canada
- Average UV index in September: 1
The months with the highest UV index are May, June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, September, October, November and December (UV index 1).
Average cloud cover in September
Déline, Canada
- Average cloud cover in September: 49
The month with the most cloud cover is December (Cloud cover 77).
The month with the least cloud cover is June (Cloud cover 35).
Average visibility in September
Déline, Canada
- Average visibility in September: 9km
The months with the highest visibility are June and July (10km).
The months with the lowest visibility are January, February and December (5km).
