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
In Keithley Creek, the average high-temperature in September drops from a moderately hot 23.4°C (74.1°F) in August to a refreshing 16.9°C (62.4°F). During the nights in September, the temperature averages to a cold 4.9°C (40.8°F).Humidity
In Keithley Creek, the average relative humidity in September is 71%.Rainfall
In Keithley Creek, Canada, in September, it is raining for 14.5 days, with typically 42mm (1.65") of accumulated precipitation. Throughout the year, there are 145.7 rainfall days, and 449mm (17.68") 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 0.5 snowfall days, it receives 6mm (0.24") of snow. In Keithley Creek, during the entire year, snow falls for 124.8 days and aggregates up to 1359mm (53.5") of snow.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September, sunrise is at 6:17 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:43 pm PDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 3 in September suggests the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Keithley Creek have in September?
How high is the UV index in September?
Average temperature in September
Keithley Creek, Canada
- Average high temperature in September: 16.9°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is December (-4.5°C).
- Average low temperature in September: 4.9°C
The months with the highest average low temperature are July and August (8.8°C).
The coldest month (with the lowest average low temperature) is February (-11.9°C).
Average pressure in September
Keithley Creek, Canada
- Average pressure in September: 1014.8mbar
The months with the highest atmospheric pressure are January, February and December (1019.3mbar).
The month with the lowest atmospheric pressure is June (1013mbar).
Average wind speed in September
Keithley Creek, Canada
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is November (8.9km/h).
The calmest month (with the lowest average wind speed) is August (5.8km/h).
Average humidity in September
Keithley Creek, Canada
- Average humidity in September: 71%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Keithley Creek, Canada
- Average rainfall in September: 42mm
The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is August (25mm).
Average rainfall days in September
Keithley Creek, Canada
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Keithley Creek, Canada
- Average snowfall in September: 6mm
The month with the highest snowfall is January (245mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Keithley Creek, Canada
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is March (22.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Keithley Creek, Canada
- Average daylight in September: 12h and 4min
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: 9h and 3min
The month with the most sunshine is August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Keithley Creek, Canada
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is August (16.9 days).
The month with the least sunshine days is March (6 days).
Average UV index in September
Keithley Creek, 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, November and December (UV index 1).
Average cloud cover in September
Keithley Creek, Canada
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Keithley Creek, Canada
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February and December (5km).
