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 comes with a subtle rise, with the average high-temperature adjusting from 73.4°F (23°C) in April to a still moderately hot 81.1°F (27.3°C). In Roanoke, the expected average low-temperature for May is a moderate 60.4°F (15.8°C).Heat index
The heat index in May is appraised at a tropical 86°F (30°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
The average relative humidity in May is 74%.Rainfall
In May, the rain falls for 16.3 days. Throughout May, 2.91" (74mm) of precipitation is accumulated. Throughout the year, there are 181.7 rainfall days, and 39.06" (992mm) of precipitation is accumulated.Snowfall
In Roanoke, snow does not fall in April through November.Daylight
In May, the average length of the day is 13h and 53min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:24 pm. On the last day of May, sunrise is at 5:33 am and sunset at 7:45 pm CDT.
Sunshine
In Roanoke, the average sunshine in May 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 reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In May, the average maximum UV index of 6 translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May in Roanoke?
What time are sunrise and sunset in May?
How many hours of sunshine does Roanoke have in May?
What is the month with the highest UV index in Roanoke?
What is the UV index reading in May?
Average temperature in May
Roanoke, AL
- Average high temperature in May: 81.1°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 (52°F).
- Average low temperature in May: 60.4°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).
Average pressure in May
Roanoke, 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
Roanoke, AL
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity in May
Roanoke, AL
- Average humidity in May: 74%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Roanoke, AL
- Average rainfall in May: 2.91"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is October (1.93").
Average rainfall days in May
Roanoke, AL
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in May
Roanoke, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Roanoke, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1.3 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
Roanoke, AL
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in May
Roanoke, AL
- Average sunshine days in May: 13.1 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (7.5 days).
Average UV index in May
Roanoke, AL
- 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 3).
Average cloud cover in May
Roanoke, AL
- Average cloud cover in May: 33
The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in May
Roanoke, AL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Roanoke, Alabama, USA
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