May weather forecast
Allen Junction, PA

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Weather in May

The last month of the spring, May, is an agreeable month in Allen Junction, Pennsylvania, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 69.6°F (20.9°C).

Temperature

With the onset of May, Allen Junction's average high-temperature experiences a rise, moving from April's mild 58.6°F (14.8°C) to a pleasant 69.6°F (20.9°C). May's average low-temperature reading settles at a fresh 50.5°F (10.3°C).

Humidity

In May, the average relative humidity is 79%.

Rainfall

In Allen Junction, in May, it is raining for 17.8 days, with typically 2.72" (69mm) of accumulated precipitation. In Allen Junction, during the entire year, the rain falls for 153 days and collects up to 26.81" (681mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Allen Junction aggregates 0.12" (3mm) of snow. In Allen Junction, during the entire year, snow falls for 26.7 days and aggregates up to 14.49" (368mm) 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 7:57 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:25 pm EDT.

Sunshine

In May, the average sunshine is 8.3h.

UV index

May through July, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 6 in May translates into this advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

Allen Junction in May has an average high-temperature of 69.6°F (20.9°C) and an average low-temperature of 50.5°F (10.3°C).

What is the average humidity in May?

In Allen Junction, the average relative humidity in May is 79%.

How much does it rain in May?

In May, the rain falls for 17.8 days. Throughout May, 2.72" (69mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Allen Junction aggregates 0.12" (3mm) of snow.

How many hours of daylight does Allen Junction have in May?

In Allen Junction, the average day length in May is 14h and 28min.

When is the sunrise / sunset in May in Allen Junction?

On the first day of May, sunrise is at 5:59 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:25 pm EDT.

How many hours of sunshine does Allen Junction have in May?

In Allen Junction, the average sunshine duration in May is 8.3h.

What is the month with the highest UV index?

The months with the highest UV index are May through July, with an average maximum UV index of 6.

What is the UV index reading in May in Allen Junction?

In Allen Junction, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe 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
Allen Junction, PA

Average temperature in May - Allen Junction, PA
  • Average high temperature in May: 69.6°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in May
Allen Junction, PA

Average pressure in May - Allen Junction, 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
Allen Junction, PA

Average wind speed in May - Allen Junction, PA
  • Average wind speed in May: 6.2mph

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

Average humidity in May
Allen Junction, PA

Average humidity in May - Allen Junction, PA
  • Average humidity in May: 79%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in May
Allen Junction, PA

Average rainfall in May - Allen Junction, PA
  • Average rainfall in May: 2.72"

The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in May
Allen Junction, PA

Average rainfall days in May - Allen Junction, PA
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in May
Allen Junction, PA

Average snowfall in May - Allen Junction, PA
  • Average snowfall in May: 0.12"

The month with the highest snowfall is March (4.13").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Allen Junction, PA

Average snowfall days in May - Allen Junction, PA
  • Average snowfall days in May: 0.1 days

The months with the highest number of snowfall days are January and February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Allen Junction, PA

Average daylight in May / Average sunshine in May - Allen Junction, 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 2min

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
Allen Junction, PA

Average sunshine days in May - Allen Junction, PA
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).

Average UV index in May
Allen Junction, PA

Average UV index in May - Allen Junction, PA
  • Average UV index in May: 6

The months with the highest UV index are May, 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
Allen Junction, PA

Average cloud cover in May - Allen Junction, PA
  • Average cloud cover in May: 48

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in May
Allen Junction, PA

Average visibility in May - Allen Junction, PA
  • Average visibility in May: 5mi

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

Allen Junction, Pennsylvania, USA

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