May weather forecastSumner, ME
May
Weather in May
The last month of the spring, May, is a refreshing month in Sumner, Maine, with an average temperature varying between 62.6°F (17°C) and 41.9°F (5.5°C).Temperature
In Sumner, the average high-temperature in May soars, from a frosty 47.7°F (8.7°C) in April, to a refreshing 62.6°F (17°C). In the month of May, the average temperature dips to a cold 41.9°F (5.5°C) during the night.Humidity
The months with the lowest humidity in Sumner are May and November, with an average relative humidity of 76%.Rainfall
In Sumner, Maine, in May, it is raining for 15.4 days, with typically 2.17" (55mm) of accumulated precipitation. In Sumner, during the entire year, the rain falls for 146.3 days and collects up to 28.31" (719mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Sumner aggregates 0.31" (8mm) of snow. In Sumner, during the entire year, snow falls for 69.3 days and aggregates up to 48.15" (1223mm) of snow.Daylight
In Sumner, the average length of the day in May is 14h and 49min.On the first day of the month, sunrise is at 5:31 am and sunset at 7:46 pm. On the last day of May, sunrise is at 5:00 am and sunset at 8:18 pm EDT.
Sunshine
The average sunshine in May is 7.7h.UV index
In Sumner, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 4 in May, converts into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Sumner, ME
- Average high temperature in May: 62.6°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in May: 41.9°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure in May
Sumner, ME
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Sumner, ME
- Average wind speed in May: 5.8mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in May
Sumner, ME
- Average humidity in May: 76%
The months with the highest relative humidity are January, February and March (86%).
The months with the lowest relative humidity are May and November (76%).
Average rainfall in May
Sumner, ME
- Average rainfall in May: 2.17"
The wettest month (with the highest rainfall) is October (3.31").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in May
Sumner, ME
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in May
Sumner, ME
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (12.28").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sumner, ME
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is February (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sumner, 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 42min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in May
Sumner, ME
- Average sunshine days in May: 13.6 days
The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (11.3 days).
Average UV index in May
Sumner, 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 February and December (UV index 1).
Average cloud cover in May
Sumner, ME
- Average cloud cover in May: 52
The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 40).
Average visibility in May
Sumner, ME
- Average visibility in May: 5mi
The months with the highest visibility are May, June, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, July, August and September (4mi).
