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 start of September involves a subtle temperature drop, shifting from a warm 23.5°C (74.3°F) in August to an enjoyable 19.6°C (67.3°F). The low-temperature average for Lachute during September stands at a frosty 9.8°C (49.6°F).Humidity
In September, the average relative humidity in Lachute is 80%.Rainfall
In Lachute, during September, the rain falls for 11.9 days and regularly aggregates up to 52mm (2.05") of precipitation. Throughout the year, in Lachute, there are 144.1 rainfall days, and 758mm (29.84") of precipitation is accumulated.Snowfall
In Lachute, Canada, snow does not fall in June through September.Daylight
In September, the average length of the day in Lachute is 12h and 31min.On the first day of September in Lachute, sunrise is at 6:19 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:38 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Lachute, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the usual temperature for Lachute in September?
What is the average humidity in September in Lachute?
How many days does it rain in September in Lachute?
When it does not snow in Lachute?
Does it snow in Lachute in September?
How many hours of daylight does Lachute have in September?
When is the sunrise / sunset in September in Lachute?
How long on average sun shines in September in Lachute?
How high is the UV index in September in Lachute?
Average temperature in September
Lachute, Canada
- Average high temperature in September: 19.6°C
The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (-6.5°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is July (14.8°C).
The coldest month (with the lowest average low temperature) is January (-14°C).
Average pressure in September
Lachute, Canada
- Average pressure in September: 1017.1mbar
The months with the highest atmospheric pressure are March and November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).
Average wind speed in September
Lachute, Canada
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is April (14.2km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in September
Lachute, Canada
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Lachute, Canada
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is May (78mm).
The driest months (with the least rainfall) are February and November (51mm).
Average rainfall days in September
Lachute, Canada
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Lachute, Canada
- Average snowfall in September: 0mm
The month with the highest snowfall is January (247mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Lachute, Canada
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lachute, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Lachute, Canada
- Average sunshine days in September: 16 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in September
Lachute, Canada
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Lachute, Canada
- Average cloud cover in September: 36
The months with the most cloud cover are January and February (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Lachute, Canada
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, September, October and November (9km).
The month with the lowest visibility is January (7km).
Lachute, Canada
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