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 onset of May brings a temperature shift, with the average high-temperature moving from a cool 51.1°F (10.6°C) in April to a refreshing 62.8°F (17.1°C). During May, an average low-temperature of 48°F (8.9°C) is observed.Humidity
In May, the average relative humidity is 78%.Rainfall
In May, the rain falls for 15.4 days. Throughout May, 2.2" (56mm) of precipitation is accumulated. In Greendale, during the entire year, the rain falls for 129 days and collects up to 20.35" (517mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Greendale aggregates 0.04" (1mm) of snow. In Greendale, during the entire year, snow falls for 45.9 days and aggregates up to 12.09" (307mm) of snow.Daylight
The average length of the day in May is 14h and 40min.On the first day of the month, sunrise is at 5:44 am and sunset at 7:53 pm. On the last day of May, in Greendale, sunrise is at 5:15 am and sunset at 8:23 pm CDT.
Sunshine
In Greendale, the average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 during May translates into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Greendale in May?
What is the average humidity in May in Greendale?
How many days does it rain in May in Greendale?
What is the last month it snows in Greendale?
How many hours of daylight does Greendale have in May?
When are sunrise and sunset in May in Greendale?
How long on average sun shines in May in Greendale?
What is the UV index intensity in May in Greendale?
Average temperature in May
Greendale, WI
- Average high temperature in May: 62.8°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in May
Greendale, WI
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Greendale, WI
- Average wind speed in May: 8.8mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in May
Greendale, WI
- Average humidity in May: 78%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in May
Greendale, WI
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is July (2.6").
The driest month (with the least rainfall) is December (0.79").
Average rainfall days in May
Greendale, WI
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in May
Greendale, WI
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Greendale, WI
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Greendale, WI
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Greendale, WI
- Average sunshine days in May: 12.4 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in May
Greendale, WI
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Greendale, WI
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in May
Greendale, WI
- 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).
Greendale, Wisconsin, USA
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