May weather forecastLong Island, ME
May
Weather in May
The last month of the spring, May, is a mild month in Long Island, Maine, with an average temperature fluctuating between 46.9°F (8.3°C) and 57.4°F (14.1°C).Temperature
May marks a rise in the average high-temperature, moving from April's frosty 47.8°F (8.8°C) to a refreshing 57.4°F (14.1°C). Long Island, during the month of May, experiences an average low-temperature of 46.9°F (8.3°C).Humidity
The average relative humidity in May is 81%.Rainfall
In Long Island, during May, the rain falls for 13.2 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 127 rainfall days, and 21.93" (557mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 44min.On the first day of the month, sunrise is at 5:31 am and sunset at 7:43 pm. On the last day of May, in Long Island, sunrise is at 5:01 am and sunset at 8:15 pm EDT.
Sunshine
In Long Island, the average sunshine in May is 8.4h.UV index
In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 4 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Long Island, ME
- Average high temperature in May: 57.4°F
The warmest month (with the highest average high temperature) is July (72.5°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in May
Long Island, ME
- Average pressure in May: 29.99"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Long Island, ME
- Average wind speed in May: 9mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in May
Long Island, ME
- Average humidity in May: 81%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in May
Long Island, ME
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in May
Long Island, ME
- Average rainfall days in May: 13.2 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in May
Long Island, ME
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Long Island, ME
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Long Island, ME
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in May
Long Island, ME
- Average sunshine days in May: 16 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in May
Long Island, 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
Long Island, ME
- Average cloud cover in May: 45
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Long Island, 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).
