May weather forecast
Markham, Canada

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Weather in May

May in Markham brings further warmth, longer days and spring in full bloom. Daylight hours continue to increase making the days much longer than the winter months. It's a pleasant time of the year and is characterized by moderate temperatures. The rainfall increases to 65mm (2.56") as relative humidity settles at 76%. Packed with unavoidable freshness, May weather supports a plethora of outdoor activities.

Temperature

Markham's transition into May brings a rise in the average high-temperature, moving from a chilly 9.3°C (48.7°F) in April to an enjoyable 16.4°C (61.5°F). During May, the nighttime temperature averages to a frosty 8°C (46.4°F).

Humidity

In May, the average relative humidity in Markham is 76%.

Rainfall

In Markham, in May, during 16.5 rainfall days, 65mm (2.56") of precipitation is typically accumulated. In Markham, during the entire year, the rain falls for 157.1 days and collects up to 653mm (25.71") of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Markham. During 0.3 snowfall days, in May, Markham aggregates 1mm (0.04") of snow. In Markham, during the entire year, snow falls for 51.3 days and aggregates up to 415mm (16.34") of snow.

Daylight

In May, the average length of the day in Markham is 14h and 46min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:20 pm. On the last day of May, in Markham, Canada, sunrise is at 5:38 am and sunset at 8:52 pm EDT.

Sunshine

The average sunshine in May is 8.9h.

UV index

In Markham, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 4 suggests this advice:
Exercise prevention - Warding off sunburn is urged. It's recommended to limit sun exposure when its radiation is at its peak during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the usual temperature for Markham in May?

The high-temperature, in May, in Markham, records 16.4°C (61.5°F), while the low-temperature is 8°C (46.4°F).

What is the average humidity in May in Markham?

The average relative humidity in May in Markham, Canada, is 76%.

How many days does it rain in May in Markham?

In Markham, in May, it is raining for 16.5 days, with typically 65mm (2.56") of accumulated precipitation.

What is the last month it snows in Markham?

May is the last month it regularly snows in Markham. During 0.3 snowfall days, in May, Markham aggregates 1mm (0.04") of snow.

How many hours of daylight does Markham have in May?

The average day length in May is 14h and 46min.

When are sunrise and sunset in May in Markham?

On the first day of May in Markham, sunrise is at 6:07 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:52 pm EDT.

How many hours of sunshine does Markham have in May?

The average sunshine duration in May is 8.9h.

What is the UV index reading in May in Markham?

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Markham, Canada

Average temperature in May - Markham, Canada
  • Average high temperature in May: 16.4°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-3.2°C).

  • Average low temperature in May: 8°C

The months with the highest average low temperature are July and August (16.6°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).

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Average pressure in May
Markham, Canada

Average pressure in May - Markham, Canada
  • Average pressure in May: 1015.3mbar

The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

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Average wind speed in May
Markham, Canada

Average wind speed in May - Markham, Canada
  • Average wind speed in May: 12.6km/h

The windiest month (with the highest average wind speed) is January (17.5km/h).
The calmest month (with the lowest average wind speed) is July (10.8km/h).

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Average humidity in May
Markham, Canada

Average humidity in May - Markham, Canada
  • Average humidity in May: 76%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in May
Markham, Canada

Average rainfall in May - Markham, Canada
  • Average rainfall in May: 65mm

The wettest month (with the highest rainfall) is July (78mm).
The driest month (with the least rainfall) is February (30mm).

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Average rainfall days in May
Markham, Canada

Average rainfall days in May - Markham, Canada
  • Average rainfall days in May: 16.5 days

The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is February (5.9 days).

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Average snowfall in May
Markham, Canada

Average snowfall in May - Markham, Canada
  • Average snowfall in May: 1mm

The month with the highest snowfall is January (118mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in May
Markham, Canada

Average snowfall days in May - Markham, Canada
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (12.5 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
Markham, Canada

Average daylight in May / Average sunshine in May - Markham, Canada
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in May
Markham, Canada

Average sunshine days in May - Markham, Canada
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is March (14.9 days).
The month with the least sunshine days is August (9 days).

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Average UV index in May
Markham, Canada

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in May
Markham, Canada

Average cloud cover in May - Markham, Canada
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in May
Markham, Canada

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

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

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Markham, Canada

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