May weather forecast and climate
Calgary, Canada

The magnificent skyscrapers of the city of Calgary, Canada
The magnificent skyscrapers of the city of Calgary, Canada

Weather in May

The last month of the spring, May, is a moderate month in Calgary, Canada, with temperature in the range of an average high of 15.4°C (59.7°F) and an average low of 5°C (41°F).

Temperature

In Calgary, the average high-temperature rises, from a frosty 8.2°C (46.8°F) in April, to a mild 15.4°C (59.7°F). In May, the average low-temperature is 5°C (41°F).

Humidity

In Calgary, the average relative humidity in May is 62%.

Rainfall

In Calgary, during May, the rain falls for 13.8 days and regularly aggregates up to 46mm (1.81") of precipitation. In Calgary, during the entire year, the rain falls for 94.1 days and collects up to 288mm (11.34") of precipitation.

Snowfall

January through June, September through December are months with snowfall. In May, in Calgary, it is snowing for 1.8 days. Throughout May, 26mm (1.02") of snow is accumulated. In Calgary, Canada, during the entire year, snow falls for 75.3 days, and aggregates up to 629mm (24.76") of snow.

Daylight

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

Sunshine

In Calgary, the average sunshine is 9.8h.

UV index

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Calgary?

In May, the average relative humidity in Calgary, Canada, is 62%.

How much does it rain in Calgary in May?

In Calgary, Canada, in May, during 13.8 rainfall days, 46mm (1.81") of precipitation is typically accumulated.

How much does it snow in Calgary in May?

In Calgary, Canada, in May, during 1.8 snowfall days, 26mm (1.02") of snow is typically accumulated.

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

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

How many hours of sunshine does Calgary have in May?

The average sunshine in May in Calgary is 9.8h.

What is the UV index intensity in May in Calgary?

The average daily maximum UV index in May in Calgary, Canada, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in May
Calgary, Canada

Average temperature in May - Calgary, Canada
  • Average high temperature in May: 15.4°C

The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is December (-4.8°C).

  • Average low temperature in May: 5°C

The month with the highest average low temperature is July (10°C).
The coldest month (with the lowest average low temperature) is December (-11.5°C).

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Average pressure in May
Calgary, Canada

Average pressure in May - Calgary, Canada
  • Average pressure in May: 1013.6mbar

The month with the highest atmospheric pressure is February (1019.3mbar).
The month with the lowest atmospheric pressure is June (1010.8mbar).

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Average wind speed in May
Calgary, Canada

Average wind speed in May - Calgary, Canada
  • Average wind speed in May: 12.2km/h

The windiest month (with the highest average wind speed) is January (13.1km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).

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Average humidity in May
Calgary, Canada

Average humidity in May - Calgary, Canada
  • Average humidity in May: 62%

Months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is September (59%).

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Average rainfall in May
Calgary, Canada

Average rainfall in May - Calgary, Canada
  • Average rainfall in May: 46mm

The wettest month (with the highest rainfall) is June (65mm).
The driest month (with the least rainfall) is January (9mm).

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Average rainfall days in May
Calgary, Canada

Average rainfall days in May - Calgary, Canada
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is November (2.5 days).

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Average snowfall in May
Calgary, Canada

Average snowfall in May - Calgary, Canada
  • Average snowfall in May: 26mm

The month with the highest snowfall is April (102mm).
Months with the least snowfall are July and August (0mm).

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Average snowfall days in May
Calgary, Canada

Average snowfall days in May - Calgary, Canada
  • Average snowfall days in May: 1.8 days

The month with the highest number of snowfall days is February (12.9 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight in May /
Average sunshine in May
Calgary, Canada

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 the shortest days is December (Average daylight: 8h).

  • Average sunshine in May: 9.8h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 5.2h).

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Average sunshine days in May
Calgary, Canada

Average sunshine days in May - Calgary, Canada
  • Average sunshine days in May: 14.3 days

The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is June (10.7 days).

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Average UV index in May
Calgary, Canada

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

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in May
Calgary, Canada

Average cloud cover in May - Calgary, Canada
  • Average cloud cover in May: 37

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in May
Calgary, Canada

Average visibility in May - Calgary, Canada
  • Average visibility in May: 9km

Months with the highest visibility are June, August and September (10km).
Months with the lowest visibility are January, February, March, April, May, July, October, November and December (9km).

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