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
May's arrival brings a temperature shift, moving from a refreshing 60.4°F (15.8°C) in April to a pleasant 70.3°F (21.3°C). An average low-temperature of 52.9°F (11.6°C) is noted during the month of May.Humidity
With an average relative humidity of 81%, May is the most humid month.Rainfall
In May, the rain falls for 15.9 days. Throughout May, 2.24" (57mm) of precipitation is accumulated. In Grantley, during the entire year, the rain falls for 139.8 days and collects up to 22.95" (583mm) of precipitation.Snowfall
Months with snowfall 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
In Grantley, the average length of the day in May is 14h and 24min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:01 pm. On the last day of May, in Grantley, sunrise is at 5:40 am and sunset at 8:29 pm EDT.
Sunshine
In Grantley, 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 value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 6 in May leads to these recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the most humid month?
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?
What time are sunrise and sunset in May?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index intensity in May?
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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