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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a moderately hot 24.7°C (76.5°F) to a pleasant 20.6°C (69.1°F). Throughout September, an average low-temperature of 11.4°C (52.5°F) is expected.Humidity
In Outremont, the average relative humidity in September is 76%.Rainfall
February and September are months with the least rain when the rain falls for 11.8 days and typically aggregates up to 54mm (2.13") of rain.Snowfall
In Outremont, snow does not fall in June through September.Daylight
In Outremont, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:31 pm. On the last day of September, in Outremont, sunrise is at 6:52 am and sunset at 6:36 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 3 in September leads to these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Outremont in September?
What is the average humidity in September in Outremont?
What is the driest month in Outremont?
How much does it rain in Outremont in September?
When it does not snow in Outremont?
Does it snow in Outremont in September?
What is the average length of the day in September in Outremont?
What time are sunrise and sunset in September in Outremont?
How long on average sun shines in September in Outremont?
How high is the UV index in September in Outremont?
Average temperature in September
Outremont, Canada
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is July (25.4°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is July (16.2°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).
Average pressure in September
Outremont, Canada
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).
Average wind speed in September
Outremont, Canada
- Average wind speed in September: 11km/h
The windiest month (with the highest average wind speed) is April (14.4km/h).
The calmest months (with the lowest average wind speed) are July, August and September (11km/h).
Average humidity in September
Outremont, Canada
- Average humidity in September: 76%
The months with the highest relative humidity are January and February (90%).
The months with the lowest relative humidity are April and May (74%).
Average rainfall in September
Outremont, Canada
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is May (78mm).
The driest months (with the least rainfall) are February and September (54mm).
Average rainfall days in September
Outremont, Canada
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (5 days).
Average snowfall in September
Outremont, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is January (242mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Outremont, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Outremont, Canada
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in September
Outremont, Canada
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in September
Outremont, Canada
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Outremont, Canada
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Outremont, Canada
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is January (7km).
