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
Grantley, Pennsylvania, in May sees a temperature change, with average high-temperatures moving from a moderate 60.4°F (15.8°C) in April to an agreeable 70.3°F (21.3°C). In the month of May, the average temperature in Grantley dips to a cool 52.9°F (11.6°C) during the night.Humidity
May is the most humid month, with an average relative humidity of 81%.Rainfall
In Grantley, in May, during 15.9 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 139.8 rainfall days, and 22.95" (583mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grantley are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Grantley aggregates 0.04" (1mm) of snow. In Grantley, during the entire year, snow falls for 18.4 days and aggregates up to 9.13" (232mm) of snow.Daylight
The average length of the day in May in Grantley is 14h and 24min.On the first day of May, sunrise is at 6:05 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:29 pm EDT.
Sunshine
The average sunshine in May is 8.4h.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 threat to health from exposure to the Sun's UV rays for average individuals.Note: In May, the UV index of 6 transforms into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What is the temperature in May in Grantley?
What is the most humid month in Grantley?
What is the average humidity in May in Grantley?
How many days does it rain in May in Grantley?
What is the last month it snows in Grantley?
What is the average length of the day in May in Grantley?
What time are sunrise and sunset in May in Grantley?
How long on average sun shines in May in Grantley?
When is the highest UV index in Grantley?
What is the UV index intensity in May in Grantley?
Average temperature in May
Grantley, PA
- Average high temperature in May: 70.3°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 (35.8°F).
- Average low temperature in May: 52.9°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 (23.4°F).
Average pressure in May
Grantley, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Grantley, PA
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Grantley, PA
- Average humidity in May: 81%
The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are March, April and November (76%).
Average rainfall in May
Grantley, PA
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in May
Grantley, PA
- Average rainfall days in May: 15.9 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in May
Grantley, PA
- Average snowfall in May: 0.04"
The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grantley, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grantley, 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 2min
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
Grantley, PA
- Average sunshine days in May: 11.7 days
The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in May
Grantley, 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, November and December (UV index 2).
Average cloud cover in May
Grantley, PA
- Average cloud cover in May: 46
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Grantley, 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).
Grantley, Pennsylvania, USA
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