December weather forecastWillow River, MN
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Willow River, Minnesota, with an average temperature ranging between max 22.1°F (-5.5°C) and min 11.3°F (-11.5°C).Temperature
December's onset brings a clear reduction in the average high-temperature, falling from a cold 36.5°F (2.5°C) in November to a subzero cold 22.1°F (-5.5°C). In December, Willow River records an average nighttime temperature of 11.3°F (-11.5°C).Humidity
In Willow River, the average relative humidity in December is 89%.Rainfall
In Willow River, in December, it is raining for 3 days, with typically 1.14" (29mm) of accumulated 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 are January through May, October through December. The month with the most snowfall is December, when snow falls for 15.9 days and typically aggregates up to 6.46" (164mm) of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Willow River.On the first day of December, sunrise is at 7:34 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 4:35 pm CST.
Sunshine
The average sunshine in December in Willow River is 2.8h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Experience reduced UV exposure by about half when donning a wide-brim hat. 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 December
Willow River, MN
- Average high temperature in December: 22.1°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 December: 11.3°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 December
Willow River, MN
- Average pressure in December: 30.09"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 December
Willow River, MN
- Average wind speed in December: 7.6mph
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 December
Willow River, MN
- Average humidity in December: 89%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Willow River, MN
- Average rainfall in December: 1.14"
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 December
Willow River, MN
- Average rainfall days in December: 3 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 December
Willow River, MN
- Average snowfall in December: 6.46"
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 December
Willow River, MN
- Average snowfall days in December: 15.9 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 December /
Average sunshine in December
Willow River, MN
- Average daylight in December: 8h and 42min
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 December: 2h and 48min
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 December
Willow River, MN
- Average sunshine days in December: 14.8 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 December
Willow River, MN
- Average UV index in December: 1
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 December
Willow River, MN
- Average cloud cover in December: 71
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 December
Willow River, MN
- Average visibility in December: 4mi
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).
