May weather forecast
Gwynedd Heights, PA

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Weather in May

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

Temperature

May brings a temperature change, with average high-temperatures moving from April's mild 60.4°F (15.8°C) to a pleasant 71.2°F (21.8°C). During the month of May, the temperature falls to an average of 53.2°F (11.8°C).

Humidity

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

Rainfall

In Gwynedd Heights, Pennsylvania, during May, the rain falls for 13.1 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Gwynedd Heights, 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. During 0.1 snowfall days, in May, Gwynedd Heights aggregates 0.2" (5mm) of snow. Throughout the year, there are 14.8 snowfall days, and 3.5" (89mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 25min.
On the first day of the month, sunrise is at 5:59 am and sunset at 7:56 pm. On the last day of May, in Gwynedd Heights, sunrise is at 5:33 am and sunset at 8:24 pm EDT.

Sunshine

In May, the average sunshine in Gwynedd Heights 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 estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

An average high-temperature, in May, in Gwynedd Heights, is 71.2°F (21.8°C) and the average low-temperature is 53.2°F (11.8°C).

What is the average humidity in May?

In May, the average relative humidity is 76%.

How many days does it rain in May?

In Gwynedd Heights, in May, it is raining for 13.1 days, with typically 1.02" (26mm) of accumulated precipitation.

What is the last month it snows?

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

What is the average length of the day in May?

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

What time are sunrise and sunset in May?

In May, on the first day of the month, 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 8:24 pm EDT.

How many hours of sunshine does Gwynedd Heights have in May?

In May, the average sunshine duration is 8.6h.

When is the highest UV index?

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

What is the UV index intensity in May?

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents 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
Gwynedd Heights, PA

Average temperature in May - Gwynedd Heights, 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).

Average pressure in May
Gwynedd Heights, PA

Average pressure in May - Gwynedd Heights, 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
Gwynedd Heights, PA

Average wind speed in May - Gwynedd Heights, 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).

Average humidity in May
Gwynedd Heights, PA

Average humidity in May - Gwynedd Heights, 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%).

Average rainfall in May
Gwynedd Heights, PA

Average rainfall in May - Gwynedd Heights, 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").

Average rainfall days in May
Gwynedd Heights, PA

Average rainfall days in May - Gwynedd Heights, 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).

Average snowfall in May
Gwynedd Heights, PA

Average snowfall in May - Gwynedd Heights, 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").

Average snowfall days in May
Gwynedd Heights, PA

Average snowfall days in May - Gwynedd Heights, 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).

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

Average daylight in May / Average sunshine in May - Gwynedd Heights, 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).

Average sunshine days in May
Gwynedd Heights, PA

Average sunshine days in May - Gwynedd Heights, 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).

Average UV index in May
Gwynedd Heights, PA

Average UV index in May - Gwynedd Heights, 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).

Average cloud cover in May
Gwynedd Heights, PA

Average cloud cover in May - Gwynedd Heights, 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).

Average visibility in May
Gwynedd Heights, PA

Average visibility in May - Gwynedd Heights, 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).

Gwynedd Heights, Pennsylvania, USA

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