May weather forecastSmithfield, ME
May
Weather in May
The last month of the spring, May, is a refreshing month in Smithfield, Maine, with temperature in the range of an average high of 63.1°F (17.3°C) and an average low of 43.2°F (6.2°C).Temperature
Smithfield sees an increase in average high-temperatures during May, moving from a frosty 49.6°F (9.8°C) in April to a refreshing 63.1°F (17.3°C). Smithfield, in May, observes a steady average low-temperature of 43.2°F (6.2°C).Humidity
In Smithfield, Maine, the average relative humidity in May is 78%.Rainfall
In Smithfield, during May, the rain falls for 16 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 142.5 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Smithfield aggregates 0.71" (18mm) of snow. Throughout the year, there are 54.3 snowfall days, and 40.87" (1038mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 50min.On the first day of May, sunrise is at 5:28 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 4:57 am and sunset at 8:17 pm EDT.
Sunshine
The average sunshine in May in Smithfield is 7.6h.UV index
The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Smithfield, ME
- Average high temperature in May: 63.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in May: 43.2°F
The month with the highest average low temperature is July (56.7°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in May
Smithfield, ME
- Average pressure in May: 29.98"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Smithfield, ME
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Smithfield, ME
- Average humidity in May: 78%
The months with the highest relative humidity are February and March (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in May
Smithfield, ME
- Average rainfall in May: 2.36"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in May
Smithfield, ME
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Smithfield, ME
- Average snowfall in May: 0.71"
The month with the highest snowfall is February (9.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Smithfield, ME
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (11.8 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, ME
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 7h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in May
Smithfield, ME
- Average sunshine days in May: 12.9 days
The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in May
Smithfield, ME
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Smithfield, ME
- Average cloud cover in May: 51
The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in May
Smithfield, ME
- Average visibility in May: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
