May weather forecastGraterford, PA
May
Weather in May
May, the last month of the spring in Graterford, is a pleasant month, with an average temperature fluctuating between 52.3°F (11.3°C) and 70.7°F (21.5°C).Temperature
As April transitions into May, a change in temperatures is observed, with average highs moving from a refreshing 60.3°F (15.7°C) to an agreeable 70.7°F (21.5°C). The low-temperature average for Graterford during May stands at a cool 52.3°F (11.3°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In Graterford, in May, it is raining for 17 days, with typically 2.6" (66mm) of accumulated precipitation. In Graterford, during the entire year, the rain falls for 146.5 days and collects up to 27.87" (708mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 26min.On the first day of May, sunrise is at 6:00 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:24 pm EDT.
Sunshine
The average sunshine in May is 8.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Graterford, PA
- Average high temperature in May: 70.7°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in May
Graterford, 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
Graterford, PA
- Average wind speed in May: 6.3mph
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
Graterford, PA
- Average humidity in May: 79%
The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in May
Graterford, PA
- Average rainfall in May: 2.6"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in May
Graterford, PA
- Average rainfall days in May: 17 days
The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in May
Graterford, PA
- Average snowfall in May: 0"
The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Graterford, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Graterford, PA
- Average daylight in May: 14h and 24min
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 24min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Graterford, PA
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in May
Graterford, 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
Graterford, PA
- Average cloud cover in May: 47
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Graterford, 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).
