Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As Sumner transitions into May, a noticeable rise in the average high-temperature is observed, soaring from a frosty 47.7°F (8.7°C) in April to a comfortable 62.6°F (17°C). May nights in Sumner observe an average temperature dip to an icy 41.9°F (5.5°C).Humidity
The months with the lowest humidity in Sumner are May and November, with an average relative humidity of 76%.Rainfall
In May, in Sumner, the rain falls for 15.4 days. Throughout May, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Sumner, Maine, there are 146.3 rainfall days, and 28.31" (719mm) of precipitation is accumulated.Snowfall
Months with snowfall in Sumner 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. Throughout the year, there are 69.3 snowfall days, and 48.15" (1223mm) of snow is accumulated.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 in Sumner, Maine, is 7.7h.UV index
In Sumner, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the average May temperature in Sumner?
What are the least humid months in Sumner?
What is the average humidity in May in Sumner?
How many days does it rain in May in Sumner?
What is the last month it snows in Sumner?
What is the average length of the day in May in Sumner?
When are sunrise and sunset in May in Sumner?
How many hours of sunshine does Sumner have in May?
How high is the UV index in May in Sumner?
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 5min
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 4min
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).
Sumner, Maine, USA
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