May weather forecast
Saint-Hyacinthe, Canada

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Weather in May

The last month of the spring, May, is a refreshing month in Saint-Hyacinthe, Canada, with an average temperature varying between 17.9°C (64.2°F) and 7.6°C (45.7°F).

Temperature

The onset of May brings a distinct rise in the average high-temperature, advancing from a frosty 9.5°C (49.1°F) in April to a comfortable 17.9°C (64.2°F). Saint-Hyacinthe records an average nighttime low-temperature of 7.6°C (45.7°F) throughout May.

Humidity

May is the least humid month, with an average relative humidity of 75%.

Rainfall

The wettest months in Saint-Hyacinthe are May and August, with an average 82mm (3.23") of rainfall.

Snowfall

January through May, October through December are months with snowfall in Saint-Hyacinthe. May is the last month it regularly snows in Saint-Hyacinthe. During 0.4 snowfall days, in May, Saint-Hyacinthe aggregates 2mm (0.08") of snow. In Saint-Hyacinthe, during the entire year, snow falls for 81.6 days and aggregates up to 1190mm (46.85") of snow.

Daylight

The average length of the day in May in Saint-Hyacinthe is 14h and 56min.
On the first day of May in Saint-Hyacinthe, sunrise is at 5:38 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:06 am and sunset at 8:33 pm EDT.

Sunshine

In May, the average sunshine in Saint-Hyacinthe is 8.3h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In May, the average maximum UV index of 4 translates into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What are May temperatures in Saint-Hyacinthe?

The average high-temperature, in May, in Saint-Hyacinthe, is 17.9°C (64.2°F), while the average low-temperature is 7.6°C (45.7°F).

What is the least humid month in Saint-Hyacinthe?

The least humid month in Saint-Hyacinthe is May, with an average relative humidity of 75%.

What is the average humidity in May in Saint-Hyacinthe?

In May, the average relative humidity is 75%.

What is the rainiest month in Saint-Hyacinthe?

The months with the most rainfall are May and August, with an average 82mm (3.23") of precipitation.

How much does it rain in Saint-Hyacinthe in May?

In Saint-Hyacinthe, Canada, in May, during 18.3 rainfall days, 82mm (3.23") of precipitation is typically accumulated.

What is the last month it snows in Saint-Hyacinthe?

May is the last month it regularly snows in Saint-Hyacinthe. During 0.4 snowfall days, in May, Saint-Hyacinthe aggregates 2mm (0.08") of snow.

How many hours of daylight does Saint-Hyacinthe have in May?

In May, the average day length is 14h and 56min.

When is the sunrise / sunset in May in Saint-Hyacinthe?

On the first day of May in Saint-Hyacinthe, Canada, sunrise is at 5:38 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:06 am and sunset at 8:33 pm EDT.

How long on average sun shines in May in Saint-Hyacinthe?

In Saint-Hyacinthe, Canada, the average sunshine duration in May is 8.3h.

How high is the UV index in May in Saint-Hyacinthe?

The average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Saint-Hyacinthe, Canada

Average temperature in May - Saint-Hyacinthe, Canada
  • Average high temperature in May: 17.9°C

The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (-5.9°C).

  • Average low temperature in May: 7.6°C

The month with the highest average low temperature is July (15°C).
The coldest month (with the lowest average low temperature) is January (-13.1°C).

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Average pressure in May
Saint-Hyacinthe, Canada

Average pressure in May - Saint-Hyacinthe, Canada
  • Average pressure in May: 1014.8mbar

The month with the highest atmospheric pressure is November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1012.4mbar).

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Average wind speed in May
Saint-Hyacinthe, Canada

Average wind speed in May - Saint-Hyacinthe, Canada
  • Average wind speed in May: 11.9km/h

The windiest month (with the highest average wind speed) is April (13.3km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).

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Average humidity in May
Saint-Hyacinthe, Canada

Average humidity in May - Saint-Hyacinthe, Canada
  • Average humidity in May: 75%

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (75%).

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Average rainfall in May
Saint-Hyacinthe, Canada

Average rainfall in May - Saint-Hyacinthe, Canada
  • Average rainfall in May: 82mm

The wettest months (with the highest rainfall) are May and August (82mm).
The driest month (with the least rainfall) is September (54mm).

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Average rainfall days in May
Saint-Hyacinthe, Canada

Average rainfall days in May - Saint-Hyacinthe, Canada
  • Average rainfall days in May: 18.3 days

The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (5.6 days).

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Average snowfall in May
Saint-Hyacinthe, Canada

Average snowfall in May - Saint-Hyacinthe, Canada
  • Average snowfall in May: 2mm

The month with the highest snowfall is February (298mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in May
Saint-Hyacinthe, Canada

Average snowfall days in May - Saint-Hyacinthe, Canada
  • Average snowfall days in May: 0.4 days

The month with the highest number of snowfall days is February (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
Saint-Hyacinthe, Canada

Average daylight in May / Average sunshine in May - Saint-Hyacinthe, 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 July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).

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Average sunshine days in May
Saint-Hyacinthe, Canada

Average sunshine days in May - Saint-Hyacinthe, Canada
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (7.3 days).

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Average UV index in May
Saint-Hyacinthe, Canada

Average UV index in May - Saint-Hyacinthe, Canada
  • Average UV index in May: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in May
Saint-Hyacinthe, Canada

Average cloud cover in May - Saint-Hyacinthe, Canada
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in May
Saint-Hyacinthe, Canada

Average visibility in May - Saint-Hyacinthe, Canada
  • Average visibility in May: 9km

The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March and December (7km).

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Saint-Hyacinthe, Canada

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