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
The beginning of May marks a clear shift in the average high-temperature, advancing from April's chilly 49.6°F (9.8°C) to a refreshing 64°F (17.8°C). Sumner throughout May, records an average low-temperature of 45.5°F (7.5°C).Humidity
May is the least humid month in Sumner, with an average relative humidity of 76%.Rainfall
In Sumner, Wisconsin, during May, the rain falls for 17.5 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, there are 137.1 rainfall days, and 24.72" (628mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Sumner. May is the last month it regularly snows. During 0.9 snowfall days, in May, Sumner aggregates 0.67" (17mm) of snow. Throughout the year, in Sumner, Wisconsin, there are 84.2 snowfall days, and 30.63" (778mm) of snow is accumulated.Daylight
In May, the average length of the day in Sumner is 14h and 55min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:13 pm. On the last day of May, sunrise is at 5:21 am and sunset at 8:47 pm CDT.
Sunshine
The average sunshine in May in Sumner, Wisconsin, is 8.4h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 5 during May translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Sumner?
What is the least humid month 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 long on average sun shines in May in Sumner?
How high is the UV index in May in Sumner?
Average temperature in May
Sumner, WI
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in May: 45.5°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in May
Sumner, WI
- Average pressure in May: 29.95"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Sumner, WI
- Average wind speed in May: 8mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in May
Sumner, WI
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).
Average rainfall in May
Sumner, WI
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in May
Sumner, WI
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is June (19 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in May
Sumner, WI
- Average snowfall in May: 0.67"
The month with the highest snowfall is February (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sumner, WI
- Average snowfall days in May: 0.9 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sumner, WI
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in May
Sumner, WI
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is June (9.4 days).
Average UV index in May
Sumner, WI
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Sumner, WI
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in May
Sumner, WI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Sumner, Wisconsin, USA
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