May weather forecastBoulder Junction, WI
May
Weather in May
The last month of the spring, May, is an enjoyable month in Boulder Junction, Wisconsin, with an average temperature fluctuating between 42.4°F (5.8°C) and 63.3°F (17.4°C).Temperature
May's arrival is marked by a significant increase in the average high-temperature, moving from a chilly 46°F (7.8°C) in April to a refreshing 63.3°F (17.4°C). In May, the recorded average low-temperature in Boulder Junction is a wintry 42.4°F (5.8°C).Humidity
May is the least humid month, with an average relative humidity of 71%.Rainfall
The month with the most rainfall is May, when the rain falls for 15.7 days and typically aggregates up to 2.95" (75mm) of precipitation.Snowfall
Months with snowfall in Boulder Junction, Wisconsin, are January through May, October through December. May is the last month it regularly snows in Boulder Junction, Wisconsin. During 1.8 snowfall days, in May, Boulder Junction aggregates 0.94" (24mm) of snow. Throughout the year, there are 127.5 snowfall days, and 59.72" (1517mm) of snow is accumulated.Daylight
The average length of the day in May is 14h and 59min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:07 pm. On the last day of May, sunrise is at 5:10 am and sunset at 8:41 pm CDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
The average daily maximum UV index in May in Boulder Junction is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, an average UV index of 4 transforms into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Boulder Junction, WI
- Average high temperature in May: 63.3°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (18.5°F).
- Average low temperature in May: 42.4°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in May
Boulder Junction, WI
- Average pressure in May: 29.97"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Boulder Junction, WI
- Average wind speed in May: 7.8mph
The windiest month (with the highest average wind speed) is November (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in May
Boulder Junction, WI
- Average humidity in May: 71%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (71%).
Average rainfall in May
Boulder Junction, WI
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in May
Boulder Junction, WI
- Average rainfall days in May: 15.7 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in May
Boulder Junction, WI
- Average snowfall in May: 0.94"
The month with the highest snowfall is December (11.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Boulder Junction, WI
- Average snowfall days in May: 1.8 days
The month with the highest number of snowfall days is January (26.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Boulder Junction, WI
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in May
Boulder Junction, WI
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is January (5 days).
Average UV index in May
Boulder Junction, WI
- 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 January, March, November and December (UV index 1).
Average cloud cover in May
Boulder Junction, WI
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in May
Boulder Junction, WI
- Average visibility in May: 6mi
The months with the highest visibility are May, June and July (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
