May weather forecastWesterly, RI
May
Weather in May
The entrance of May signifies the start of Westerly, Rhode Island's warm season. As the cold season recedes further into the past, residents enjoy the sun's lingering presence in the sky longer. The increase in daylight and sunshine hours since April encourages more outdoor activities, marking the beginning of the summer season. Humidity levels rise but seem less oppressive due to pleasant temperatures. The most significant change in May comes as snowfall completely ceases, affirming the end of winter's reign.Temperature
An escalation in the average high-temperature is seen with the onset of May, moving from a cool 52.5°F (11.4°C) in April to an enjoyable 62.2°F (16.8°C). Throughout May, the average low-temperature records at a fresh 51.1°F (10.6°C).Humidity
The average relative humidity in May is 80%.Rainfall
In Westerly, during May, the rain falls for 15.3 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, there are 154.5 rainfall days, and 31.46" (799mm) of precipitation is accumulated.Snowfall
In Westerly, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 32min.On the first day of the month, sunrise is at 5:43 am and sunset at 7:45 pm. On the last day of May, sunrise is at 5:16 am and sunset at 8:13 pm EDT.
Sunshine
In Westerly, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 5 translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. When the Sun is at its strongest around midday, find shade and limit exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Westerly, RI
- Average high temperature in May: 62.2°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in May: 51.1°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in May
Westerly, RI
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Westerly, RI
- Average wind speed in May: 9.8mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).
Average humidity in May
Westerly, RI
- Average humidity in May: 80%
The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in May
Westerly, RI
- Average rainfall in May: 2.48"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in May
Westerly, RI
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in May
Westerly, RI
- Average snowfall in May: 0"
The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Westerly, RI
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.6 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
Westerly, RI
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in May
Westerly, RI
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (11 days).
Average UV index in May
Westerly, RI
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in May
Westerly, RI
- Average cloud cover in May: 43
The months with the most cloud cover are March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Westerly, RI
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
