May weather forecast
Slave Lake, Canada

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Weather in May

The last month of the spring, May, is a refreshing month in Slave Lake, Canada, with an average temperature varying between 14.5°C (58.1°F) and 3.4°C (38.1°F).

Temperature

Slave Lake's weather experiences a significant temperature rise with the arrival of May, soaring from an icy 5.6°C (42.1°F) in April to a refreshing 14.5°C (58.1°F). Throughout May, an average low-temperature of 3.4°C (38.1°F) is expected in Slave Lake.

Humidity

With an average relative humidity of 61%, May is the least humid month.

Rainfall

In May, in Slave Lake, the rain falls for 13.1 days. Throughout May, 38mm (1.5") of precipitation is accumulated. In Slave Lake, during the entire year, the rain falls for 119.7 days and collects up to 409mm (16.1") of precipitation.

Snowfall

January through June, September through December are months with snowfall in Slave Lake. In Slave Lake, during May, snow falls for 1.8 days and regularly aggregates up to 23mm (0.91") of snow. In Slave Lake, during the entire year, snow falls for 114.3 days and aggregates up to 1073mm (42.24") of snow.

Daylight

In Slave Lake, the average length of the day in May is 16h and 14min.
On the first day of the month, sunrise is at 5:55 am and sunset at 9:16 pm. On the last day of May, in Slave Lake, sunrise is at 5:05 am and sunset at 10:08 pm MDT.

Sunshine

In May, the average sunshine is 10.3h.

UV index

May through August, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 4 in May leads to these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What is the usual temperature for Slave Lake in May?

In Slave Lake, 14.5°C (58.1°F) is the average high-temperature and 3.4°C (38.1°F) is the average low-temperature during May.

What is the least humid month in Slave Lake?

With an average relative humidity of 61%, May is the least humid month in Slave Lake.

What is the average humidity in May in Slave Lake?

The average relative humidity in May in Slave Lake, Canada, is 61%.

How many days does it rain in May in Slave Lake?

In Slave Lake, during May, the rain falls for 13.1 days and regularly aggregates up to 38mm (1.5") of precipitation.

How much does it snow in Slave Lake in May?

In May, in Slave Lake, it is snowing for 1.8 days. Throughout May, 23mm (0.91") of snow is accumulated.

What is the average length of the day in May in Slave Lake?

In Slave Lake, the average day length in May is 16h and 14min.

What time are sunrise and sunset in May in Slave Lake?

On the first day of May in Slave Lake, Canada, sunrise is at 5:55 am and sunset at 9:16 pm. On the last day of the month, sunrise is at 5:05 am and sunset at 10:08 pm MDT.

How long on average sun shines in May in Slave Lake?

In May, the average sunshine duration in Slave Lake is 10.3h.

What is the month with the highest UV index in Slave Lake?

May through August, with an average maximum UV index of 4, are months with the highest UV index.

What is the UV index reading in May in Slave Lake?

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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
Slave Lake, Canada

Average temperature in May - Slave Lake, Canada
  • Average high temperature in May: 14.5°C

The warmest month (with the highest average high temperature) is July (21°C).
The month with the lowest average high temperature is December (-8.5°C).

  • Average low temperature in May: 3.4°C

The month with the highest average low temperature is July (9.9°C).
The coldest month (with the lowest average low temperature) is February (-15.1°C).

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Average pressure in May
Slave Lake, Canada

Average pressure in May - Slave Lake, Canada
  • Average pressure in May: 1013.9mbar

The month with the highest atmospheric pressure is February (1019.9mbar).
The month with the lowest atmospheric pressure is June (1010.1mbar).

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Average wind speed in May
Slave Lake, Canada

Average wind speed in May - Slave Lake, Canada
  • Average wind speed in May: 11.4km/h

The windiest month (with the highest average wind speed) is October (12.2km/h).
The calmest month (with the lowest average wind speed) is July (10.5km/h).

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Average humidity in May
Slave Lake, Canada

Average humidity in May - Slave Lake, Canada
  • Average humidity in May: 61%

The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is May (61%).

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Average rainfall in May
Slave Lake, Canada

Average rainfall in May - Slave Lake, Canada
  • Average rainfall in May: 38mm

The wettest month (with the highest rainfall) is June (71mm).
The driest month (with the least rainfall) is December (18mm).

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Average rainfall days in May
Slave Lake, Canada

Average rainfall days in May - Slave Lake, Canada
  • Average rainfall days in May: 13.1 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in May
Slave Lake, Canada

Average snowfall in May - Slave Lake, Canada
  • Average snowfall in May: 23mm

The month with the highest snowfall is March (173mm).
The months with the least snowfall are July and August (0mm).

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Average snowfall days in May
Slave Lake, Canada

Average snowfall days in May - Slave Lake, Canada
  • Average snowfall days in May: 1.8 days

The month with the highest number of snowfall days is March (19.3 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in May /
Average sunshine in May
Slave Lake, Canada

Average daylight in May / Average sunshine in May - Slave Lake, Canada
  • Average daylight in May: 16h and 1min

The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 12min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).

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Average sunshine days in May
Slave Lake, Canada

Average sunshine days in May - Slave Lake, Canada
  • Average sunshine days in May: 14.8 days

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is April (8 days).

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Average UV index in May
Slave Lake, Canada

Average UV index in May - Slave Lake, Canada
  • Average UV index in May: 4

The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, October and December (UV index 1).

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Average cloud cover in May
Slave Lake, Canada

Average cloud cover in May - Slave Lake, Canada
  • Average cloud cover in May: 36

The months with the most cloud cover are February and March (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in May
Slave Lake, Canada

Average visibility in May - Slave Lake, Canada
  • Average visibility in May: 9km

The months with the highest visibility are May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February and March (6km).

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Slave Lake, Canada

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