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 start of December is characterized by a significant decrease in the average high-temperature, moving from a wintry 40.1°F (4.5°C) in November to a subzero cold 25°F (-3.9°C). The nights of December anticipate an average low-temperature of 15.1°F (-9.4°C).Humidity
In Crystal, Minnesota, the average relative humidity in December is 87%.Rainfall
In Crystal, in December, during 4.5 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Crystal, during the entire year, the rain falls for 120.1 days and collects up to 22.09" (561mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 11.6 days and typically aggregates up to 5.04" (128mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:32 am and sunset at 4:33 pm. On the last day of December, in Crystal, Minnesota, sunrise is at 7:51 am and sunset at 4:41 pm CST.
Sunshine
The average sunshine in December in Crystal is 3.4h.UV index
The months with the lowest UV index in Crystal, Minnesota, are January, February, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold is December in Crystal?
What is the average humidity in December in Crystal?
How much does it rain in Crystal in December?
What is the snowiest month in Crystal?
How many days does it snow in December in Crystal?
What is the month with the shortest days in Crystal?
What is the average length of the day in December in Crystal?
When is the sunrise / sunset in December in Crystal?
How many hours of sunshine does Crystal have in December?
What are the months with the lowest UV index in Crystal?
How high is the UV index in December in Crystal?
Average temperature in December
Crystal, MN
- Average high temperature in December: 25°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.1°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in December
Crystal, MN
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Crystal, MN
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in December
Crystal, MN
- Average humidity in December: 87%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Crystal, MN
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in December
Crystal, MN
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is January (2.5 days).
Average snowfall in December
Crystal, MN
- Average snowfall in December: 5.04"
The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Crystal, MN
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Crystal, 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in December
Crystal, MN
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is January (18.4 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in December
Crystal, MN
- Average UV index in December: 1
The months with the highest UV index are June and 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
Crystal, MN
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in December
Crystal, MN
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Crystal, Minnesota, USA
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