May weather forecast
Port Perry, PA

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Weather in May

May, the last month of the spring in Port Perry, is a pleasant month, with an average temperature varying between 51.1°F (10.6°C) and 71.8°F (22.1°C).

Temperature

The arrival of May brings a change in Port Perry's weather, with average high-temperatures moving from April's mild 60.1°F (15.6°C) to an agreeable 71.8°F (22.1°C). Throughout the May nights, Port Perry encounters a low-temperature of 51.1°F (10.6°C).

Humidity

The average relative humidity in May in Port Perry is 78%.

Rainfall

The month with the most rainfall is May, when the rain falls for 18.2 days and typically aggregates up to 2.56" (65mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Port Perry. During 0.1 snowfall days, in May, Port Perry aggregates 0.04" (1mm) of snow. Throughout the year, there are 35.4 snowfall days, and 10.35" (263mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 26min.
On the first day of May, sunrise is at 6:17 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:42 pm EDT.

Sunshine

In Port Perry, the average sunshine in May is 8.8h.

UV index

In Port Perry, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

What is the usual temperature for Port Perry in May?

The high-temperature during May is 71.8°F (22.1°C) and the low-temperature is 51.1°F (10.6°C).

What is the average humidity in May in Port Perry?

The average relative humidity in May is 78%.

What is the wettest month in Port Perry?

The month with the most rainfall in Port Perry, Pennsylvania, is May, when the rain falls for 18.2 days and typically aggregates up to 2.56" (65mm) of precipitation.

How many days does it rain in May in Port Perry?

In Port Perry, in May, it is raining for 18.2 days, with typically 2.56" (65mm) of accumulated precipitation.

What is the last month it snows in Port Perry?

May is the last month it regularly snows in Port Perry, Pennsylvania. During 0.1 snowfall days, in May, Port Perry aggregates 0.04" (1mm) of snow.

How many hours of daylight does Port Perry have in May?

In May, the average day length in Port Perry is 14h and 26min.

When is the sunrise / sunset in May in Port Perry?

On the first day of May in Port Perry, Pennsylvania, sunrise is at 6:17 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:42 pm EDT.

How long on average sun shines in May in Port Perry?

In Port Perry, the average sunshine duration in May is 8.8h.

What is the UV index reading in May in Port Perry?

In Port Perry, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Port Perry, PA

Average temperature in May - Port Perry, PA
  • Average high temperature in May: 71.8°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.1°F).

  • Average low temperature in May: 51.1°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in May
Port Perry, PA

Average pressure in May - Port Perry, PA
  • Average pressure in May: 30"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in May
Port Perry, PA

Average wind speed in May - Port Perry, PA
  • Average wind speed in May: 6.1mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in May
Port Perry, PA

Average humidity in May - Port Perry, PA
  • Average humidity in May: 78%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).

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Average rainfall in May
Port Perry, PA

Average rainfall in May - Port Perry, PA
  • Average rainfall in May: 2.56"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.06").

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Average rainfall days in May
Port Perry, PA

Average rainfall days in May - Port Perry, PA
  • Average rainfall days in May: 18.2 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (7.7 days).

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Average snowfall in May
Port Perry, PA

Average snowfall in May - Port Perry, PA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Port Perry, PA

Average snowfall days in May - Port Perry, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (9.7 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
Port Perry, PA

Average daylight in May / Average sunshine in May - Port Perry, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

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Average sunshine days in May
Port Perry, PA

Average sunshine days in May - Port Perry, PA
  • Average sunshine days in May: 10.1 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (10.1 days).

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Average UV index in May
Port Perry, PA

Average UV index in May - Port Perry, PA
  • Average UV index in May: 5

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

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Average cloud cover in May
Port Perry, PA

Average cloud cover in May - Port Perry, PA
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in May
Port Perry, PA

Average visibility in May - Port Perry, PA
  • Average visibility in May: 5mi

The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).

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Port Perry, Pennsylvania, USA

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