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 sea temperature 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
Noticing a change, the average high-temperature in Jamestown during May moves from April's fresh 53.2°F (11.8°C) to a refreshing 62.6°F (17°C). The average temperature in Jamestown drops to a fresh 50.7°F (10.4°C) during the night in the month of May.Humidity
In May, the average relative humidity in Jamestown, Rhode Island, is 79%.Rainfall
In Jamestown, during May, the rain falls for 14.8 days and regularly aggregates up to 2.09" (53mm) of precipitation. Throughout the year, in Jamestown, there are 148.1 rainfall days, and 29.65" (753mm) of precipitation is accumulated.Snowfall
Months with snowfall in Jamestown are January through March, May, November and December. May is the first month it typically snows in Jamestown. Throughout May, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. In Jamestown, during the entire year, snow falls for 22.9 days and aggregates up to 8.78" (223mm) of snow.Ocean temperature
In Jamestown, in May, the average water temperature is 51.6°F (10.9°C).Note: Dipping into 51.6°F (10.9°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
In Jamestown, the average length of the day in May is 14h and 32min.On the first day of the month, sunrise is at 5:41 am and sunset at 7:43 pm. On the last day of May, in Jamestown, sunrise is at 5:14 am and sunset at 8:12 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In Jamestown, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 5 in May leads to these guidelines:
Guard yourself - Avoiding sunburn is suggested. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Jamestown in May?
What is the average humidity in May in Jamestown?
How much does it rain in Jamestown in May?
When does it start snowing in Jamestown?
How cold is the water in May in Jamestown?
How many hours of daylight does Jamestown have in May?
When are sunrise and sunset in May in Jamestown?
How many hours of sunshine does Jamestown have in May?
What is the UV index intensity in May in Jamestown?
Average temperature in May
Jamestown, RI
- Average high temperature in May: 62.6°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in May
Jamestown, 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
Jamestown, RI
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in May
Jamestown, RI
- Average humidity in May: 79%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is March (73%).
Average rainfall in May
Jamestown, RI
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in May
Jamestown, RI
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is April (15.6 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Jamestown, RI
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in May
Jamestown, RI
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Jamestown, RI
- Average sea temperature in May: 51.5°F
The best month for swimming (with the highest average sea temperature) is August (69.6°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).
Average daylight in May /
Average sunshine in May
Jamestown, RI
- Average daylight in May: 14h and 3min
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 3min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Jamestown, RI
- Average sunshine days in May: 14.9 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in May
Jamestown, 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
Jamestown, RI
- Average cloud cover in May: 45
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Jamestown, 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).
Jamestown, Rhode Island, USA
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