May weather forecastBlack River Falls, WI
May
Weather in May
May, the last month of the spring in Black River Falls, is an enjoyable month, with an average temperature fluctuating between 46.9°F (8.3°C) and 64.9°F (18.3°C).Temperature
The start of May is characterized by an increase in the average high-temperature, transitioning from a cool 51.8°F (11°C) in April to a refreshing 64.9°F (18.3°C). An average minimum temperature of 46.9°F (8.3°C) is recorded in Black River Falls, Wisconsin, during the month of May.Humidity
The average relative humidity in May in Black River Falls is 79%.Rainfall
In May, the rain falls for 15 days. Throughout May, 2.13" (54mm) of precipitation is accumulated. Throughout the year, there are 120.8 rainfall days, and 16.34" (415mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Black River Falls. May is the last month it regularly snows. During 0.5 snowfall days, in May, Black River Falls aggregates 0.04" (1mm) of snow. Throughout the year, in Black River Falls, Wisconsin, there are 62.1 snowfall days, and 13.11" (333mm) of snow is accumulated.Daylight
In May, the average length of the day in Black River Falls is 14h and 48min.On the first day of May, sunrise is at 5:52 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:22 am and sunset at 8:39 pm CDT.
Sunshine
The average sunshine in May in Black River Falls is 8.5h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Black River Falls, WI
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in May: 46.9°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in May
Black River Falls, 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
Black River Falls, WI
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in May
Black River Falls, WI
- Average humidity in May: 79%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Black River Falls, WI
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is June (2.91").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in May
Black River Falls, WI
- Average rainfall days in May: 15 days
The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in May
Black River Falls, WI
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Black River Falls, WI
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Black River Falls, WI
- Average daylight in May: 14h and 48min
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: 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: 3h and 0min).
Average sunshine days in May
Black River Falls, WI
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in May
Black River Falls, WI
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Black River Falls, WI
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Black River Falls, WI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
