May weather forecast
Arlington Heights, PA

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Weather in May

The last month of the spring, May, is an agreeable month in Arlington Heights, Pennsylvania, with an average temperature ranging between min 48.6°F (9.2°C) and max 68.5°F (20.3°C).

Temperature

Arlington Heights's May weather shows an increase in high-temperatures, moving from April's refreshing 56.8°F (13.8°C) to a pleasant 68.5°F (20.3°C). Arlington Heights, in the month of May, anticipates a consistent average low-temperature of 48.6°F (9.2°C).

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Arlington Heights, in May, during 17.7 rainfall days, 2.95" (75mm) of precipitation is typically accumulated. Throughout the year, there are 161.8 rainfall days, and 32.24" (819mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Arlington Heights are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Arlington Heights aggregates 0.47" (12mm) of snow. Throughout the year, there are 38.6 snowfall days, and 19.76" (502mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 29min.
On the first day of May, sunrise is at 5:57 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:26 pm EDT.

Sunshine

In May, the average sunshine in Arlington Heights is 8h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What are May temperatures in Arlington Heights?

The high-temperature in Arlington Heights during May is 68.5°F (20.3°C) and the low-temperature is 48.6°F (9.2°C).

What is the average humidity in May in Arlington Heights?

The average relative humidity in May is 79%.

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

In May, in Arlington Heights, the rain falls for 17.7 days. Throughout May, 2.95" (75mm) of precipitation is accumulated.

What is the last month it snows in Arlington Heights?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Arlington Heights aggregates 0.47" (12mm) of snow.

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

In Arlington Heights, the average day length in May is 14h and 29min.

When are sunrise and sunset in May in Arlington Heights?

On the first day of May in Arlington Heights, sunrise is at 5:57 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:26 pm EDT.

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

The average sunshine duration in May in Arlington Heights is 8h.

When is the highest UV index in Arlington Heights?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

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

In May, the average daily maximum UV index in Arlington Heights, Pennsylvania, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Arlington Heights, PA

Average temperature in May - Arlington Heights, PA
  • Average high temperature in May: 68.5°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in May: 48.6°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

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Average pressure in May
Arlington Heights, PA

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

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Arlington Heights, PA

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

The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in May
Arlington Heights, PA

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

The months with the highest relative humidity are February, October and December (82%).
The months with the lowest relative humidity are April and July (77%).

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Average rainfall in May
Arlington Heights, PA

Average rainfall in May - Arlington Heights, PA
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in May
Arlington Heights, PA

Average rainfall days in May - Arlington Heights, PA
  • Average rainfall days in May: 17.7 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.8 days).

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Average snowfall in May
Arlington Heights, PA

Average snowfall in May - Arlington Heights, PA
  • Average snowfall in May: 0.47"

The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Arlington Heights, PA

Average snowfall days in May - Arlington Heights, PA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (10.6 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
Arlington Heights, PA

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days in May
Arlington Heights, PA

Average sunshine days in May - Arlington Heights, PA
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is April (11.1 days).

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Average UV index in May
Arlington Heights, PA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Arlington Heights, PA

Average cloud cover in May - Arlington Heights, PA
  • Average cloud cover in May: 51

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 36).

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Average visibility in May
Arlington Heights, PA

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

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

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Arlington Heights, Pennsylvania, USA

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