May weather forecast
Arlington Knolls, PA

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Weather in May

The last month of the spring, May, is an agreeable month in Arlington Knolls, Pennsylvania, with an average temperature fluctuating between 50.2°F (10.1°C) and 69.4°F (20.8°C).

Temperature

Arlington Knolls's transition into May is marked by a rise in the average high-temperature, advancing from a moderate 58.5°F (14.7°C) in April to a pleasant 69.4°F (20.8°C). In Arlington Knolls, an average temperature of 50.2°F (10.1°C) is noted during May nights.

Humidity

In Arlington Knolls, Pennsylvania, the average relative humidity in May is 79%.

Rainfall

In May, the rain falls for 17.2 days. Throughout May, 2.91" (74mm) of precipitation is accumulated. In Arlington Knolls, during the entire year, the rain falls for 162.5 days and collects up to 31.69" (805mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Arlington Knolls. May is the last month it regularly snows in Arlington Knolls. During 0.1 snowfall days, in May, Arlington Knolls aggregates 0.16" (4mm) of snow. In Arlington Knolls, Pennsylvania, during the entire year, snow falls for 32.3 days and aggregates up to 17.24" (438mm) of snow.

Daylight

In May, the average length of the day is 14h and 28min.
On the first day of the month, sunrise is at 5:59 am and sunset at 7:58 pm. On the last day of May, sunrise is at 5:33 am and sunset at 8:26 pm EDT.

Sunshine

In May, the average sunshine in Arlington Knolls is 8.2h.

UV index

In Arlington Knolls, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. When the Sun is at its strongest around midday, find shade and limit exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 13, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the usual temperature for Arlington Knolls in May?

The high-temperature, in May, in Arlington Knolls, records 69.4°F (20.8°C), while the low-temperature is 50.2°F (10.1°C).

What is the average humidity in May in Arlington Knolls?

The average relative humidity in May in Arlington Knolls, Pennsylvania, is 79%.

How many days does it rain in May in Arlington Knolls?

In Arlington Knolls, Pennsylvania, in May, it is raining for 17.2 days, with typically 2.91" (74mm) of accumulated precipitation.

What is the last month it snows in Arlington Knolls?

May is the last month it regularly snows in Arlington Knolls. During 0.1 snowfall days, in May, Arlington Knolls aggregates 0.16" (4mm) of snow.

How many hours of daylight does Arlington Knolls have in May?

In Arlington Knolls, Pennsylvania, the average day length in May is 14h and 28min.

When is the sunrise / sunset in May in Arlington Knolls?

On the first day of May in Arlington Knolls, sunrise is at 5:59 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:26 pm EDT.

How long on average sun shines in May in Arlington Knolls?

The average sunshine duration in May is 8.2h.

How high is the UV index in May in Arlington Knolls?

The average daily maximum UV index in May in Arlington Knolls is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
Arlington Knolls, PA

Average temperature in May - Arlington Knolls, PA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in May: 50.2°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in May
Arlington Knolls, PA

Average pressure in May - Arlington Knolls, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Arlington Knolls, PA

Average wind speed in May - Arlington Knolls, PA
  • Average wind speed in May: 6.2mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in May
Arlington Knolls, PA

Average humidity in May - Arlington Knolls, PA
  • Average humidity in May: 79%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in May
Arlington Knolls, PA

Average rainfall in May - Arlington Knolls, PA
  • Average rainfall in May: 2.91"

The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in May
Arlington Knolls, PA

Average rainfall days in May - Arlington Knolls, PA
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (9.9 days).

Average snowfall in May
Arlington Knolls, PA

Average snowfall in May - Arlington Knolls, PA
  • Average snowfall in May: 0.16"

The month with the highest snowfall is March (4.88").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Arlington Knolls, PA

Average snowfall days in May - Arlington Knolls, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Arlington Knolls, PA

Average daylight in May / Average sunshine in May - Arlington Knolls, PA
  • Average daylight in May: 14h and 3min

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 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in May
Arlington Knolls, PA

Average sunshine days in May - Arlington Knolls, PA
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (11.7 days).

Average UV index in May
Arlington Knolls, PA

Average UV index in May - Arlington Knolls, PA
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May
Arlington Knolls, PA

Average cloud cover in May - Arlington Knolls, PA
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in May
Arlington Knolls, PA

Average visibility in May - Arlington Knolls, PA
  • Average visibility in May: 5mi

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

Arlington Knolls, Pennsylvania, USA

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