May weather forecastCharlestown, RI
May
Weather in May
When May arrives in Charlestown, it brings an abundance of clear, sunny days. The temperatures increase even further, and residents begin to feel the full effects of spring. It's no surprise that the city is at its most vibrant during this month, with longer hours of sunshine and daylight promoting an energetic atmosphere. A maximum average high temperature of 60.3°F (15.7°C) defines the climate in May. This month, heralding the approach of summer, has weather perfect for spending time outdoors.Temperature
The onset of May brings a temperature shift, with the average high-temperature moving from a fresh 51.3°F (10.7°C) in April to a mild 60.3°F (15.7°C). Throughout May, Charlestown reports a steady low-temperature average of 51.8°F (11°C), slightly lower than its daytime counterpart.Humidity
In May, the average relative humidity is 81%.Rainfall
In Charlestown, Rhode Island, during May, the rain falls for 14.5 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 154.7 rainfall days, and 32.01" (813mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
In May, the average length of the day is 14h and 32min.On the first day of the month, sunrise is at 5:42 am and sunset at 7:44 pm. On the last day of May, in Charlestown, sunrise is at 5:15 am and sunset at 8:13 pm EDT.
Sunshine
The average sunshine in May is 8.8h.UV index
The average daily maximum UV index in May in Charlestown is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Charlestown, RI
- Average high temperature in May: 60.3°F
The warmest month (with the highest average high temperature) is August (76.1°F).
The month with the lowest average high temperature is January (37.6°F).
- Average low temperature in May: 51.8°F
The months with the highest average low temperature are July and August (68.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in May
Charlestown, RI
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Charlestown, RI
- Average wind speed in May: 11.2mph
The windiest month (with the highest average wind speed) is January (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.5mph).
Average humidity in May
Charlestown, RI
- Average humidity in May: 81%
The month with the highest relative humidity is June (82%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in May
Charlestown, RI
- Average rainfall in May: 2.4"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in May
Charlestown, RI
- Average rainfall days in May: 14.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in May
Charlestown, RI
- Average snowfall in May: 0"
The month with the highest snowfall is March (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Charlestown, RI
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.9 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
Charlestown, 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 48min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in May
Charlestown, RI
- Average sunshine days in May: 14.3 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in May
Charlestown, 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
Charlestown, RI
- Average cloud cover in May: 42
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Charlestown, 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).
