Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's onset is marked by a clear temperature increase, soaring from a frosty 8.8°C (47.8°F) in April to a comfortable 17.8°C (64°F). Throughout May, an average low-temperature of 7.4°C (45.3°F) is expected in Louiseville.Humidity
May is the least humid month in Louiseville, Canada, with an average relative humidity of 73%.Rainfall
In Louiseville, in May, during 17 rainfall days, 70mm (2.76") of precipitation is typically accumulated. In Louiseville, during the entire year, the rain falls for 147.4 days and collects up to 765mm (30.12") of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Louiseville. During 0.6 snowfall days, in May, Louiseville aggregates 2mm (0.08") of snow. In Louiseville, during the entire year, snow falls for 68.2 days and aggregates up to 964mm (37.95") of snow.Daylight
In Louiseville, the average length of the day in May is 15h and 0min.On the first day of the month, sunrise is at 5:36 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:03 am and sunset at 8:35 pm EDT.
Sunshine
In Louiseville, the average sunshine in May is 8.5h.UV index
The average daily maximum UV index in May in Louiseville is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 4 in May transforms into the following instructions:
Take precautions - Protection against sun damage is advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Louiseville in May?
What is the least humid month in Louiseville?
What is the average humidity in May in Louiseville?
How much does it rain in Louiseville in May?
What is the last month it snows in Louiseville?
What is the average length of the day in May in Louiseville?
When is the sunrise / sunset in May in Louiseville?
How many hours of sunshine does Louiseville have in May?
What is the UV index reading in May in Louiseville?
Average temperature in May
Louiseville, Canada
- Average high temperature in May: 17.8°C
The warmest month (with the highest average high temperature) is July (25°C).
The month with the lowest average high temperature is January (-6.3°C).
- Average low temperature in May: 7.4°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 (-13.9°C).
Average pressure in May
Louiseville, Canada
- Average pressure in May: 1014.7mbar
The months with the highest atmospheric pressure are March and November (1017.5mbar).
The month with the lowest atmospheric pressure is June (1012.2mbar).
Average wind speed in May
Louiseville, Canada
- Average wind speed in May: 12.1km/h
The windiest month (with the highest average wind speed) is April (13.4km/h).
The calmest month (with the lowest average wind speed) is August (10.4km/h).
Average humidity in May
Louiseville, Canada
- Average humidity in May: 73%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (73%).
Average rainfall in May
Louiseville, Canada
- Average rainfall in May: 70mm
The wettest month (with the highest rainfall) is April (76mm).
The driest month (with the least rainfall) is March (53mm).
Average rainfall days in May
Louiseville, Canada
- Average rainfall days in May: 17 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in May
Louiseville, Canada
- Average snowfall in May: 2mm
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 May
Louiseville, Canada
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Louiseville, Canada
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in May
Louiseville, Canada
- Average sunshine days in May: 12.8 days
The months with the most sunshine days are September and November (15.9 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in May
Louiseville, 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).
Average cloud cover in May
Louiseville, Canada
- Average cloud cover in May: 44
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in May
Louiseville, Canada
- Average visibility in May: 9km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and February (7km).
Louiseville, Canada
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