May weather forecastRoss, WI
May
Weather in May
The last month of the spring, May, is a comfortable month in Ross, Wisconsin, with an average temperature ranging between min 47.7°F (8.7°C) and max 65.8°F (18.8°C).Temperature
With the arrival of May, the average high-temperature transitions from a fresh 53.2°F (11.8°C) in April to an enjoyable 65.8°F (18.8°C). An average nighttime temperature of 47.7°F (8.7°C) is observed during May.Humidity
In May, the average relative humidity in Ross is 80%.Rainfall
In Ross, in May, it is raining for 18.4 days, with typically 3.54" (90mm) of accumulated precipitation. In Ross, during the entire year, the rain falls for 130.6 days and collects up to 28.58" (726mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Ross. May is the last month it regularly snows. During 0.3 snowfall days, in May, Ross aggregates 0.08" (2mm) of snow. Throughout the year, there are 54.2 snowfall days, and 24.65" (626mm) of snow is accumulated.Daylight
In May, the average length of the day in Ross is 14h and 44min.On the first day of May, sunrise is at 5:54 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:36 pm CDT.
Sunshine
In Ross, the average sunshine in May is 8.1h.UV index
The average daily maximum UV index in May in Ross, Wisconsin, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 5 in May leads to these guidelines:
Take precautions - Protection against skin and eye damage is obliged. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Ross, WI
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (22.1°F).
- Average low temperature in May: 47.7°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in May
Ross, 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 (29.9"Hg).
Average wind speed in May
Ross, WI
- Average wind speed in May: 8mph
The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Ross, WI
- Average humidity in May: 80%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Ross, WI
- Average rainfall in May: 3.54"
The wettest month (with the highest rainfall) is June (4.8").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in May
Ross, WI
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in May
Ross, WI
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (6.38").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Ross, 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
Ross, WI
- 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 6min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in May
Ross, WI
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is December (17.4 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in May
Ross, 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, November and December (UV index 1).
Average cloud cover in May
Ross, WI
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Ross, WI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, October and November (6mi).
The month with the lowest visibility is January (4mi).





