May weather forecastWillow River, MN
May
Weather in May
May, the last month of the spring in Willow River, is a refreshing month, with an average temperature ranging between max 64°F (17.8°C) and min 43.2°F (6.2°C).Temperature
May marks a distinct rise in the average high-temperature, ascending from April's chilly 48.7°F (9.3°C) to an enjoyable 64°F (17.8°C). The average temperature during May nights is registered at a chilly 43.2°F (6.2°C).Humidity
May is the least humid month, with an average relative humidity of 72%.Rainfall
In Willow River, during May, the rain falls for 14.9 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Willow River, during the entire year, the rain falls for 114 days and collects up to 20.08" (510mm) of precipitation.Snowfall
Months with snowfall in Willow River, Minnesota, are January through May, October through December. May is the last month it regularly snows. During 1.1 snowfall days, in May, Willow River aggregates 1.57" (40mm) of snow. In Willow River, during the entire year, snow falls for 85.7 days and aggregates up to 31.14" (791mm) of snow.Daylight
In May, the average length of the day is 15h and 1min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:20 pm. On the last day of May, sunrise is at 5:22 am and sunset at 8:55 pm CDT.
Sunshine
In May, the average sunshine in Willow River, Minnesota, is 8.3h.UV index
In Willow River, Minnesota, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Willow River, MN
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (17.1°F).
- Average low temperature in May: 43.2°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (3.2°F).
Average pressure in May
Willow River, MN
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Willow River, MN
- Average wind speed in May: 7.9mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in May
Willow River, MN
- Average humidity in May: 72%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in May
Willow River, MN
- Average rainfall in May: 2.44"
The wettest month (with the highest rainfall) is July (2.64").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in May
Willow River, MN
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is January (2.1 days).
Average snowfall in May
Willow River, MN
- Average snowfall in May: 1.57"
The month with the highest snowfall is December (6.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Willow River, MN
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is January (18.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Willow River, MN
- 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 18min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in May
Willow River, MN
- Average sunshine days in May: 14.2 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in May
Willow River, MN
- 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
Willow River, MN
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in May
Willow River, MN
- Average visibility in May: 6mi
The months with the highest visibility are May, June, July and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).





