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
September comes with a decrease in the average high-temperature, falling from a moderately hot 24°C (75.2°F) in August to an enjoyable 18.1°C (64.6°F). A pronounced dip becomes evident during the nights in September as Waterton Park logs a consistent average temperature of 5.9°C (42.6°F).Humidity
In Waterton Park, the average relative humidity in September is 57%.Rainfall
In Waterton Park, during September, the rain falls for 7 days and regularly aggregates up to 24mm (0.94") of precipitation. Throughout the year, there are 79.6 rainfall days, and 292mm (11.5") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 1.2 snowfall days, it receives 28mm (1.1") of snow. Throughout the year, in Waterton Park, there are 55.8 snowfall days, and 822mm (32.36") of snow is accumulated.Daylight
In September, the average length of the day is 12h and 34min.On the first day of September, sunrise is at 6:53 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:15 pm MDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Boost your sun resistance with garments that are densely woven yet spacious. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When does it start snowing?
How many hours of daylight does Waterton Park have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Waterton Park have in September?
What is the UV index intensity in September?
Average temperature in September
Waterton Park, Canada
- Average high temperature in September: 18.1°C
The warmest months (with the highest average high temperature) are July and August (24°C).
The month with the lowest average high temperature is December (-3.5°C).
- Average low temperature in September: 5.9°C
The month with the highest average low temperature is August (9.5°C).
The coldest month (with the lowest average low temperature) is December (-9.9°C).
Average pressure in September
Waterton Park, Canada
- Average pressure in September: 1014.5mbar
The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is June (1011.8mbar).
Average wind speed in September
Waterton Park, Canada
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is January (16.7km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Waterton Park, Canada
- Average humidity in September: 57%
The months with the highest relative humidity are January and December (81%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Waterton Park, Canada
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is June (63mm).
The driest month (with the least rainfall) is January (5mm).
Average rainfall days in September
Waterton Park, Canada
- Average rainfall days in September: 7 days
The months with the highest number of rainy days are May and June (14 days).
The months with the least rainy days are January and February (1.8 days).
Average snowfall in September
Waterton Park, Canada
- Average snowfall in September: 28mm
The month with the highest snowfall is April (166mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Waterton Park, Canada
- Average snowfall days in September: 1.2 days
The month with the highest number of snowfall days is March (9.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Waterton Park, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Waterton Park, Canada
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is June (12.5 days).
Average UV index in September
Waterton Park, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Waterton Park, Canada
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Waterton Park, Canada
- Average visibility in September: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (9km).
