May weather forecast
Smithfield, RI

Share

Weather in May

May marks the transition into summer, with warmer weather and increased daylight signaling the time for outdoor activities. The month notes a dramatic dip in snowfall with only 0.24" (6mm) registered over 0.1 days. As temperatures climb, the greenery around Smithfield flourishes, making the city a vibrant, colourful place. May is famous for unpredictable weather, where sweltering heat can suddenly turn into thunderstorms, quickly followed by clear skies, all in one day.

Temperature

May in Smithfield comes with an increase, with the average high-temperature moving from a refreshing 55.9°F (13.3°C) in April to an enjoyable 66.9°F (19.4°C). In the month of May, the temperature generally rests at an average low of 49.6°F (9.8°C).

Humidity

The average relative humidity in May in Smithfield is 76%.

Rainfall

In May, in Smithfield, Rhode Island, the rain falls for 14.1 days. Throughout May, 1.89" (48mm) of precipitation is accumulated. In Smithfield, Rhode Island, during the entire year, the rain falls for 137.6 days and collects up to 23.98" (609mm) of precipitation.

Snowfall

Months with snowfall in Smithfield are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Smithfield aggregates 0.24" (6mm) of snow. In Smithfield, during the entire year, snow falls for 26.3 days and aggregates up to 12.64" (321mm) of snow.

Daylight

In May, the average length of the day is 14h and 35min.
On the first day of the month, sunrise is at 5:41 am and sunset at 7:45 pm. On the last day of May, sunrise is at 5:13 am and sunset at 8:14 pm EDT.

Sunshine

In Smithfield, the average sunshine in May is 8.2h.

UV index

In Smithfield, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In May, the maximum UV index of 5 transforms into these recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May in Smithfield?

The high-temperature, in May, in Smithfield, is 66.9°F (19.4°C), while the low-temperature averages to 49.6°F (9.8°C).

What is the average humidity in May in Smithfield?

The average relative humidity in May in Smithfield, Rhode Island, is 76%.

How much does it rain in Smithfield in May?

In May, in Smithfield, the rain falls for 14.1 days. Throughout May, 1.89" (48mm) of precipitation is accumulated.

What is the last month it snows in Smithfield?

May is the last month it regularly snows in Smithfield, Rhode Island. During 0.1 snowfall days, in May, Smithfield aggregates 0.24" (6mm) of snow.

What is the average length of the day in May in Smithfield?

In Smithfield, the average day length in May is 14h and 35min.

When are sunrise and sunset in May in Smithfield?

In May, on the first day of the month, sunrise is at 5:41 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:14 pm EDT.

How many hours of sunshine does Smithfield have in May?

The average sunshine duration in May is 8.2h.

How high is the UV index in May in Smithfield?

The average daily maximum UV index in May in Smithfield is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Smithfield, RI

Average temperature in May - Smithfield, RI
  • Average high temperature in May: 66.9°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in May: 49.6°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

Average pressure in May
Smithfield, RI

Average pressure in May - Smithfield, 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
Smithfield, RI

Average wind speed in May - Smithfield, RI
  • Average wind speed in May: 7.6mph

The windiest months (with the highest average wind speed) are February and March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in May
Smithfield, RI

Average humidity in May - Smithfield, RI
  • Average humidity in May: 76%

The months with the highest relative humidity are February, June, September and October (78%).
The month with the lowest relative humidity is April (71%).

Average rainfall in May
Smithfield, RI

Average rainfall in May - Smithfield, RI
  • Average rainfall in May: 1.89"

The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is September (1.06").

Average rainfall days in May
Smithfield, RI

Average rainfall days in May - Smithfield, RI
  • Average rainfall days in May: 14.1 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in May
Smithfield, RI

Average snowfall in May - Smithfield, RI
  • Average snowfall in May: 0.24"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Smithfield, RI

Average snowfall days in May - Smithfield, RI
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is March (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Smithfield, RI

Average daylight in May / Average sunshine in May - Smithfield, RI
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in May
Smithfield, RI

Average sunshine days in May - Smithfield, RI
  • Average sunshine days in May: 15.5 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (13.6 days).

Average UV index in May
Smithfield, RI

Average UV index in May - Smithfield, 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, November and December (UV index 2).

Average cloud cover in May
Smithfield, RI

Average cloud cover in May - Smithfield, RI
  • Average cloud cover in May: 48

The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in May
Smithfield, RI

Average visibility in May - Smithfield, RI
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, October, November and December (6mi).
The months with the lowest visibility are June, July, August and September (5mi).

Smithfield, Rhode Island, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location