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
Weather in September
Temperature
The arrival of September indicates a decrease in the average high-temperature, moving from a warm 23.4°C (74.1°F) in August to a refreshing 16.9°C (62.4°F). In Keithley Creek, September is marked by an average low-temperature of 4.9°C (40.8°F).Humidity
In September, the average relative humidity in Keithley Creek is 71%.Rainfall
In Keithley Creek, in September, during 14.5 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, in Keithley Creek, there are 145.7 rainfall days, and 449mm (17.68") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Keithley Creek. Throughout September, in the average 0.5 snowfall days, it receives 6mm (0.24") of snow. Throughout the year, in Keithley Creek, there are 124.8 snowfall days, and 1359mm (53.5") of snow is accumulated.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September in Keithley Creek, 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 Keithley Creek, Canada, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September in Keithley Creek is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What is the temperature in September in Keithley Creek?
What is the average humidity in September in Keithley Creek?
How much does it rain in Keithley Creek in September?
When does it start to snow in Keithley Creek?
What is the average length of the day in September in Keithley Creek?
When are sunrise and sunset in September in Keithley Creek?
How long on average sun shines in September in Keithley Creek?
How high is the UV index in September in Keithley Creek?
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).
Keithley Creek, Canada
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