Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The start of May brings a rise in the average high-temperature, moving from a mild 59.5°F (15.3°C) in April to a pleasant 69.8°F (21°C). During the month of May, the nighttime temperature falls to an average of 51.1°F (10.6°C).Humidity
The average relative humidity in May is 79%.Rainfall
In May, the rain falls for 10.1 days. Throughout May, 0.75" (19mm) of precipitation is accumulated. In Rolling Hill Acres, during the entire year, the rain falls for 91.3 days and collects up to 7.28" (185mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Rolling Hill Acres aggregates 0.2" (5mm) of snow. Throughout the year, there are 14.8 snowfall days, and 2.24" (57mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 27min.On the first day of May, sunrise is at 5:58 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:24 pm EDT.
Sunshine
In Rolling Hill Acres, the average sunshine in May is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 5 in May leads to these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Experience reduced UV exposure by about half when donning a wide-brim hat. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Rolling Hill Acres have in May?
What is the UV index intensity in May?
Average temperature in May
Rolling Hill Acres, PA
- Average high temperature in May: 69.8°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in May: 51.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in May
Rolling Hill Acres, 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
Rolling Hill Acres, PA
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Rolling Hill Acres, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in May
Rolling Hill Acres, PA
- Average rainfall in May: 0.75"
The wettest month (with the highest rainfall) is July (0.91").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in May
Rolling Hill Acres, PA
- Average rainfall days in May: 10.1 days
The months with the highest number of rainy days are June and July (10.2 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in May
Rolling Hill Acres, PA
- Average snowfall in May: 0.2"
The month with the highest snowfall is March (0.63").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Rolling Hill Acres, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Rolling Hill Acres, 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
Rolling Hill Acres, PA
- Average sunshine days in May: 17.3 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is June (16.7 days).
Average UV index in May
Rolling Hill Acres, PA
- Average UV index in May: 5
The months with the highest UV index are 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
Rolling Hill Acres, PA
- Average cloud cover in May: 49
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Rolling Hill Acres, PA
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, November and December (6mi).
The months with the lowest visibility are May, June, July, August, September and October (5mi).
Rolling Hill Acres, Pennsylvania, USA
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