May weather forecast
Châteauguay, Canada

May

Weather in May

May, the last month of the spring in Châteauguay, is a comfortable month, with temperature in the range of an average high of 18.2°C (64.8°F) and an average low of 8.5°C (47.3°F).

Temperature

May's arrival sees a clear escalation in the average high-temperature, rising from April's frosty 9.9°C (49.8°F) to an enjoyable 18.2°C (64.8°F). Throughout May, the nighttime temperature in Châteauguay averages to a chilly 8.5°C (47.3°F).

Humidity

The months with the lowest humidity in Châteauguay are April and May, with an average relative humidity of 75%.

Rainfall

The month with the most rainfall is May, when the rain falls for 17.1 days and typically aggregates up to 77mm (3.03") of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Châteauguay aggregates 1mm (0.04") of snow. In Châteauguay, during the entire year, snow falls for 65.7 days and aggregates up to 843mm (33.19") of snow.

Daylight

In May, the average length of the day is 14h and 55min.
On the first day of May, sunrise is at 5:42 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:10 am and sunset at 8:35 pm EDT.

Sunshine

In Châteauguay, the average sunshine in May is 8.4h.

UV index

The average daily maximum UV index in May in Châteauguay is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 4 during May translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.

Frequently asked questions

What is the usual temperature for Châteauguay in May?
The high-temperature, in May, in Châteauguay, records 18.2°C (64.8°F), while the low-temperature is 8.5°C (47.3°F).
What are the least humid months in Châteauguay?
The months with the lowest humidity in Châteauguay are April and May, with an average relative humidity of 75%.
What is the average humidity in May in Châteauguay?
In May, the average relative humidity in Châteauguay, Canada, is 75%.
What is the rainiest month in Châteauguay?
The month with the most rainfall is May, when the rain falls for 17.1 days and typically aggregates up to 77mm (3.03") of precipitation.
How many days does it rain in May in Châteauguay?
In Châteauguay, in May, it is raining for 17.1 days, with typically 77mm (3.03") of accumulated precipitation.
What is the last month it snows in Châteauguay?
May is the last month it regularly snows. During 0.3 snowfall days, in May, Châteauguay aggregates 1mm (0.04") of snow.
How many hours of daylight does Châteauguay have in May?
In May, the average day length in Châteauguay is 14h and 55min.
When is the sunrise / sunset in May in Châteauguay?
In May, on the first day of the month, sunrise is at 5:42 am and sunset at 8:01 pm. On the last day of the month, in Châteauguay, sunrise is at 5:10 am and sunset at 8:35 pm EDT.
How many hours of sunshine does Châteauguay have in May?
In Châteauguay, Canada, the average sunshine duration in May is 8.4h.
How high is the UV index in May in Châteauguay?
The average daily maximum UV index in May in Châteauguay is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in May - Châteauguay, Canada
Average temperature in May
Châteauguay, Canada
  • Average high temperature in May: 18.2°C

The warmest month (with the highest average high temperature) is July (25.3°C).
The month with the lowest average high temperature is January (-5.6°C).

  • Average low temperature in May: 8.5°C

The month with the highest average low temperature is July (15.9°C).
The coldest month (with the lowest average low temperature) is January (-12.7°C).

Average pressure in May - Châteauguay, Canada
Average pressure in May
Châteauguay, Canada
  • Average pressure in May: 1014.8mbar

The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1012.5mbar).

Average wind speed in May - Châteauguay, Canada
Average wind speed in May
Châteauguay, Canada
  • Average wind speed in May: 12.7km/h

The windiest months (with the highest average wind speed) are February and April (14.5km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).

Average humidity in May - Châteauguay, Canada
Average humidity in May
Châteauguay, Canada
  • Average humidity in May: 75%

The months with the highest relative humidity are January and February (90%).
The months with the lowest relative humidity are April and May (75%).

Average rainfall in May - Châteauguay, Canada
Average rainfall in May
Châteauguay, Canada
  • Average rainfall in May: 77mm

The wettest month (with the highest rainfall) is May (77mm).
The driest months (with the least rainfall) are February and September (51mm).

Average rainfall days in May - Châteauguay, Canada
Average rainfall days in May
Châteauguay, Canada
  • Average rainfall days in May: 17.1 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in May - Châteauguay, Canada
Average snowfall in May
Châteauguay, Canada
  • Average snowfall in May: 1mm

The month with the highest snowfall is February (219mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May - Châteauguay, Canada
Average snowfall days in May
Châteauguay, Canada
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Châteauguay, Canada
Average daylight in May /
Average sunshine in May
Châteauguay, Canada
  • Average daylight in May: 14h and 5min

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 May: 8h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).

Average sunshine days in May - Châteauguay, Canada
Average sunshine days in May
Châteauguay, Canada
  • Average sunshine days in May: 13 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in May - Châteauguay, Canada
Average UV index in May
Châteauguay, Canada
  • Average UV index in May: 4

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 May - Châteauguay, Canada
Average cloud cover in May
Châteauguay, Canada
  • Average cloud cover in May: 44

The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in May - Châteauguay, Canada
Average visibility in May
Châteauguay, Canada
  • Average visibility in May: 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).

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