May weather forecast
Gwynedd Valley, PA

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Weather in May

The last month of the spring, May, is an agreeable month in Gwynedd Valley, Pennsylvania, with an average temperature ranging between max 71.2°F (21.8°C) and min 53.2°F (11.8°C).

Temperature

Gwynedd Valley's May weather brings a rise in high-temperatures, moving from a refreshing 60.4°F (15.8°C) in April to a pleasant 71.2°F (21.8°C). Throughout May, Gwynedd Valley witnesses a consistent average low-temperature of 53.2°F (11.8°C).

Humidity

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

Rainfall

In Gwynedd Valley, in May, during 13.1 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Gwynedd Valley, Pennsylvania, during the entire year, the rain falls for 116.6 days and collects up to 10.63" (270mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows in Gwynedd Valley. During 0.1 snowfall days, in May, Gwynedd Valley aggregates 0.2" (5mm) of snow. Throughout the year, in Gwynedd Valley, there are 14.8 snowfall days, and 3.5" (89mm) of snow is accumulated.

Daylight

In Gwynedd Valley, Pennsylvania, the average length of the day in May is 14h and 25min.
On the first day of May, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:23 pm EDT.

Sunshine

In Gwynedd Valley, the average sunshine in May is 8.6h.

UV index

May through August, 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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 6 in May translates into these instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What are May temperatures in Gwynedd Valley?

Gwynedd Valley in May has an average high-temperature of 71.2°F (21.8°C) and an average low-temperature of 53.2°F (11.8°C).

What is the average humidity in May in Gwynedd Valley?

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

How much does it rain in Gwynedd Valley in May?

In May, in Gwynedd Valley, the rain falls for 13.1 days. Throughout May, 1.02" (26mm) of precipitation is accumulated.

What is the last month it snows in Gwynedd Valley?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Gwynedd Valley aggregates 0.2" (5mm) of snow.

How many hours of daylight does Gwynedd Valley have in May?

In May, the average day length is 14h and 25min.

When are sunrise and sunset in May in Gwynedd Valley?

On the first day of May in Gwynedd Valley, Pennsylvania, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:23 pm EDT.

How long on average sun shines in May in Gwynedd Valley?

The average sunshine duration in May in Gwynedd Valley is 8.6h.

When is the highest UV index in Gwynedd Valley?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Gwynedd Valley.

What is the UV index reading in May in Gwynedd Valley?

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

Average temperature in May - Gwynedd Valley, PA
  • Average high temperature in May: 71.2°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in May: 53.2°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in May
Gwynedd Valley, PA

Average pressure in May - Gwynedd Valley, 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).

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Average wind speed in May
Gwynedd Valley, PA

Average wind speed in May - Gwynedd Valley, PA
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in May
Gwynedd Valley, PA

Average humidity in May - Gwynedd Valley, PA
  • Average humidity in May: 76%

The months with the highest relative humidity are February, October and December (79%).
The months with the lowest relative humidity are April, July and August (73%).

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Average rainfall in May
Gwynedd Valley, PA

Average rainfall in May - Gwynedd Valley, PA
  • Average rainfall in May: 1.02"

The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is September (0.59").

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Average rainfall days in May
Gwynedd Valley, PA

Average rainfall days in May - Gwynedd Valley, PA
  • Average rainfall days in May: 13.1 days

The month with the highest number of rainy days is July (13.8 days).
The months with the least rainy days are January and February (6.3 days).

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Average snowfall in May
Gwynedd Valley, PA

Average snowfall in May - Gwynedd Valley, PA
  • Average snowfall in May: 0.2"

The month with the highest snowfall is March (1.02").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in May
Gwynedd Valley, PA

Average snowfall days in May - Gwynedd Valley, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Gwynedd Valley, PA

Average daylight in May / Average sunshine in May - Gwynedd Valley, 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 24min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

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Average sunshine days in May
Gwynedd Valley, PA

Average sunshine days in May - Gwynedd Valley, PA
  • Average sunshine days in May: 15.7 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (13.9 days).

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Average UV index in May
Gwynedd Valley, PA

Average UV index in May - Gwynedd Valley, PA
  • Average UV index in May: 6

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

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Average cloud cover in May
Gwynedd Valley, PA

Average cloud cover in May - Gwynedd Valley, PA
  • Average cloud cover in May: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Gwynedd Valley, PA

Average visibility in May - Gwynedd Valley, PA
  • Average visibility in May: 5mi

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

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Gwynedd Valley, Pennsylvania, USA

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