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
A slight uplift of average high-temperatures is noted in May, with temperatures adjusting from an agreeable 72.1°F (22.3°C) in April to a warm 80.1°F (26.7°C). Throughout May, the temperature tends to fall to a consistent average low of 58.6°F (14.8°C).Humidity
The average relative humidity in May is 75%.Rainfall
In May, the rain falls for 13.8 days. Throughout May, 2.01" (51mm) of precipitation is accumulated. In Grantley, during the entire year, the rain falls for 154.5 days and collects up to 25.04" (636mm) of precipitation.Snowfall
In Grantley, snow does not fall in April through November.Daylight
In May, the average length of the day in Grantley is 13h and 56min.On the first day of May in Grantley, sunrise is at 5:52 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 7:47 pm CDT.
Sunshine
In May, the average sunshine is 10.1h.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 threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 6 during May translates into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May in Grantley?
How much does it rain in May?
When it does not snow?
How many hours of daylight does Grantley have in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Grantley have in May?
When is the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Grantley, AL
- Average high temperature in May: 80.1°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in May: 58.6°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (33.8°F).
Average pressure in May
Grantley, AL
- Average pressure in May: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
Grantley, AL
- Average wind speed in May: 5.3mph
The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in May
Grantley, AL
- Average humidity in May: 75%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Grantley, AL
- Average rainfall in May: 2.01"
The wettest month (with the highest rainfall) is August (2.56").
The driest month (with the least rainfall) is October (1.38").
Average rainfall days in May
Grantley, AL
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in May
Grantley, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Grantley, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.5 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
Grantley, AL
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Grantley, AL
- Average sunshine days in May: 14.8 days
The months with the most sunshine days are October and November (20.1 days).
The month with the least sunshine days is July (8.9 days).
Average UV index in May
Grantley, AL
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in May
Grantley, AL
- Average cloud cover in May: 33
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in May
Grantley, AL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Grantley, Alabama, USA
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