May weather forecastWilliam Penn Manor, PA
May
Weather in May
May, the last month of the spring in William Penn Manor, is an agreeable month, with an average temperature varying between 69.6°F (20.9°C) and 50.5°F (10.3°C).Temperature
With the onset of May, William Penn Manor sees a temperature rise, with the average high-temperature moving from April's refreshing 58.6°F (14.8°C) to a pleasant 69.6°F (20.9°C). William Penn Manor throughout May, experiences an average nighttime temperature of 50.5°F (10.3°C).Humidity
In William Penn Manor, the average relative humidity in May is 79%.Rainfall
In William Penn Manor, in May, during 17.8 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. In William Penn Manor, during the entire year, the rain falls for 153 days and collects up to 26.81" (681mm) of precipitation.Snowfall
Months with snowfall in William Penn Manor are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, William Penn Manor aggregates 0.12" (3mm) of snow. Throughout the year, there are 26.7 snowfall days, and 14.49" (368mm) of snow is accumulated.Daylight
In William Penn Manor, the average length of the day in May is 14h and 28min.On the first day of May in William Penn Manor, Pennsylvania, sunrise is at 5:58 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.
Sunshine
In May, the average sunshine in William Penn Manor 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 the ordinary person.Note: During May, 6 as the daily maximum UV index converts into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, PA
- Average daylight in May: 14h and 30min
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 18min
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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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
William Penn Manor, 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).
