May weather forecastStonington, ME
May
Weather in May
The last month of the spring, May, is a cool month in Stonington, Maine, with an average temperature varying between 45.5°F (7.5°C) and 55°F (12.8°C).Temperature
The arrival of May brings an increase in high-temperatures, moving from a chilly 46°F (7.8°C) in April to a cool 55°F (12.8°C). Stonington throughout May, records an average low-temperature of 45.5°F (7.5°C).Humidity
In Stonington, the average relative humidity in May is 82%.Rainfall
In Stonington, in May, during 12 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Stonington, Maine, during the entire year, the rain falls for 115.5 days and collects up to 17.95" (456mm) of precipitation.Snowfall
May through September are months without snowfall.Ocean temperature
In Stonington, in May, the average water temperature is 44.4°F (6.9°C).Note: Danger awaits those who swim in 44.4°F (6.9°C) without protection. Falling below 50°F (10°C) means intense cold shock and hyperventilation.
Daylight
The average length of the day in May is 14h and 47min.On the first day of May in Stonington, sunrise is at 5:24 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 4:54 am and sunset at 8:10 pm EDT.
Sunshine
In May, the average sunshine is 8.1h.UV index
In Stonington, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Stonington, ME
- Average high temperature in May: 55°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in May: 45.5°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Stonington, ME
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Stonington, ME
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in May
Stonington, ME
- Average humidity in May: 82%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in May
Stonington, ME
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in May
Stonington, ME
- Average rainfall days in May: 12 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in May
Stonington, ME
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Stonington, ME
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in May
Stonington, ME
- Average sea temperature in May: 44.5°F
The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).
Average daylight in May /
Average sunshine in May
Stonington, ME
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 8h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in May
Stonington, ME
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is July (15.4 days).
Average UV index in May
Stonington, 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, November and December (UV index 2).
Average cloud cover in May
Stonington, ME
- Average cloud cover in May: 47
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Stonington, ME
- 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).
