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
September ushers in a slight temperature change, with average high-temperatures reducing from August's warm 25.3°C (77.5°F) to an enjoyable 19.5°C (67.1°F). September nights in Stewart Valley cool down to an average low-temperature of 10.2°C (50.4°F).Humidity
In September, the average relative humidity is 51%.Rainfall
In September, the rain falls for 6.3 days. Throughout September, 20mm (0.79") of precipitation is accumulated. In Stewart Valley, Canada, during the entire year, the rain falls for 87.2 days and collects up to 282mm (11.1") of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 7mm (0.28") of snow. In Stewart Valley, during the entire year, snow falls for 84.2 days and aggregates up to 560mm (22.05") of snow.Daylight
The average length of the day in September is 12h and 36min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:55 pm. On the last day of September, in Stewart Valley, sunrise is at 7:11 am and sunset at 6:50 pm CST.
Sunshine
In September, the average sunshine in Stewart Valley, Canada, is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Frequently asked questions
What is the temperature in September in Stewart Valley?
What is the average humidity in September in Stewart Valley?
How many days does it rain in September in Stewart Valley?
When does it start snowing in Stewart Valley?
What is the average length of the day in September in Stewart Valley?
What time are sunrise and sunset in September in Stewart Valley?
How long on average sun shines in September in Stewart Valley?
What is the UV index intensity in September in Stewart Valley?
Average temperature in September
Stewart Valley, Canada
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is July (25.8°C).
The month with the lowest average high temperature is February (-6.5°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is February (-13.8°C).
Average pressure in September
Stewart Valley, Canada
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is February (1021.1mbar).
The month with the lowest atmospheric pressure is June (1010mbar).
Average wind speed in September
Stewart Valley, Canada
- Average wind speed in September: 15.8km/h
The windiest month (with the highest average wind speed) is January (18.9km/h).
The calmest month (with the lowest average wind speed) is August (14.5km/h).
Average humidity in September
Stewart Valley, Canada
- Average humidity in September: 51%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Stewart Valley, Canada
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is June (54mm).
The driest month (with the least rainfall) is December (14mm).
Average rainfall days in September
Stewart Valley, Canada
- Average rainfall days in September: 6.3 days
The month with the highest number of rainy days is June (13.1 days).
The months with the least rainy days are January and February (3 days).
Average snowfall in September
Stewart Valley, Canada
- Average snowfall in September: 7mm
The month with the highest snowfall is November (100mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Stewart Valley, Canada
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Stewart Valley, Canada
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 13h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Stewart Valley, Canada
- Average sunshine days in September: 22.7 days
The month with the most sunshine days is September (22.7 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in September
Stewart Valley, Canada
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Stewart Valley, Canada
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility in September
Stewart Valley, Canada
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).
Stewart Valley, Canada
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