Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The shift from November to December brings a noticeable decrease in the average high-temperature, dropping from a wintry 39.4°F (4.1°C) to a subzero cold 23.9°F (-4.5°C). During the month of December, Willmar experiences a steady low-temperature average of 13.1°F (-10.5°C).Humidity
In December, the average relative humidity is 87%.Rainfall
In December, in Willmar, the rain falls for 2.4 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 96.3 rainfall days, and 11.02" (280mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Willmar. In December, it is snowing for 10.5 days. Throughout December, 1.26" (32mm) of snow is accumulated. In Willmar, during the entire year, snow falls for 46.8 days and aggregates up to 8.39" (213mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Willmar.On the first day of December, sunrise is at 7:39 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 4:48 pm CST.
Sunshine
In Willmar, the average sunshine in December is 3.7h.UV index
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily UV index of 1 turns into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
How cold is it in Willmar in December?
What is the average humidity in December in Willmar?
How many days does it rain in December in Willmar?
How many days does it snow in December in Willmar?
What is the month with the shortest days in Willmar?
What is the average length of the day in December in Willmar?
When is the sunrise / sunset in December in Willmar?
How long on average sun shines in December in Willmar?
When is the lowest UV index in Willmar?
What is the UV index intensity in December in Willmar?
Average temperature in December
Willmar, MN
- Average high temperature in December: 23.9°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in December
Willmar, MN
- Average pressure in December: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Willmar, MN
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in December
Willmar, MN
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and May (68%).
Average rainfall in December
Willmar, MN
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is June (1.97").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Willmar, MN
- Average rainfall days in December: 2.4 days
The month with the highest number of rainy days is June (14.9 days).
The month with the least rainy days is February (1.8 days).
Average snowfall in December
Willmar, MN
- Average snowfall in December: 1.26"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Willmar, MN
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Willmar, MN
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Willmar, MN
- Average sunshine days in December: 20 days
The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in December
Willmar, 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 February, November and December (UV index 1).
Average cloud cover in December
Willmar, MN
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Willmar, MN
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Willmar, Minnesota, USA
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