Calgary
Canada
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Calgary, Canada

A view of the magnificent skyscrapers of the city of Calgary, Canada, on a mildly sunny day
A view of the magnificent skyscrapers of the city of Calgary, Canada, on a mildly sunny day
May, the last month of the spring, in Calgary, is a comfortable month, with average temperature varying between 3.1°C (37.6°F) and 16.3°C (61.3°F).

Temperature

In May, the average high-temperature increases, from a fresh 11.2°C (52.2°F) in April, to an enjoyable 16.3°C (61.3°F). The average low-temperature, in Calgary, is 3.1°C (37.6°F).

Humidity

In Calgary, Canada, the average relative humidity is 43.5%.

Rainfall

In Calgary, during May, the rain falls for 10.1 days and regularly aggregates up to 46.1mm (1.8") of precipitation. Throughout the year, there are 68 rainfall days, and 326.7mm (12.9") of precipitation is accumulated.

Snowfall

Months with snowfall in Calgary are January through June, September through December. In May, in Calgary, Canada, it is snowing for 2.6 days. Throughout May, 119mm (4.7") of snow is accumulated. Throughout the year, there are 54.3 snowfall days, and 1288mm (50.7") of snow is accumulated.

Daylight

In May, the average length of the day is 15.6h.

Sunshine

The average sunshine in Calgary, Canada, is 8h.

UV index

The average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: In May, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Calgary?

In Calgary, in May, the average high-temperature is 16.3°C (61.3°F), and the average low-temperature is 3.1°C (37.6°F).

What is the average humidity in May in Calgary?

The average relative humidity in May in Calgary, Canada, is 43.5%.

How much does it rain in Calgary in May?

In Calgary, in May, during 10.1 rainfall days, 46.1mm (1.8") of precipitation is typically accumulated.

How many days does it snow in May in Calgary?

In Calgary, in May, snow falls for 2.6 days, with typically accumulated 119mm (4.7") of snow.

What is the average length of the day in May in Calgary?

In May, the average length of the day is 15.6h.

How many hours of sunshine does Calgary have in May?

In May, the average sunshine is 8h.

What is the UV index reading in May in Calgary?

The average daily maximum UV index in May in Calgary, Canada, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in May - Calgary, Canada
  • Average high temperature in May: 16.3°C

The warmest month (with the highest average high temperature) is July (23.2°C).
The month with the lowest average high temperature is January (-0.9°C).

  • Average low temperature in May: 3.1°C

The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is January (-13.2°C).

Average humidity in May - Calgary, Canada
  • Average humidity in May: 43.5%

The month with the highest relative humidity is December (55.3%).
The month with the lowest relative humidity is April (40.7%).

Average rainfall in May - Calgary, Canada
  • Average rainfall in May: 46.1mm

The wettest month (with the highest rainfall) is June (93.9mm).
Driest months (with the lowest rainfall) are January and February (0.1mm).

Average rainfall days in May - Calgary, Canada
  • Average rainfall days in May: 10.1 days

The month with the highest number of rainy days is June (13.8 days).
The month with the lowest number of rainy days is February (0.2 days).

Average snowfall in May - Calgary, Canada
  • Average snowfall in May: 119mm

The month with the highest snowfall is March (227mm).
Months with the lowest snowfall are July and August (0mm).

Average snowfall days in May - Calgary, Canada
  • Average snowfall days in May: 2.6 days

The month with the highest number of snowfall days is March (9.5 days).
The month with the lowest number of snowfall days is July (0 days).

Average daylight in May / Average sunshine in May - Calgary, Canada
  • Average daylight in May: 15.6h

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 8h).

  • Average sunshine in May: 8h

The month with most sunshine is July (Average sunshine: 10.1h).
The month with least sunshine is December (Average sunshine: 3.7h).

Average UV index in May - Calgary, Canada
  • Average UV index in May: 6

Months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 0).