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 changeover to December signals a significant decrease in the average high-temperature, dropping from a wintry 41°F (5°C) in November to a subzero cold 25.9°F (-3.4°C). During December, the nighttime temperature averages of 15.6°F (-9.1°C).Humidity
In December, the average relative humidity is 88%.Rainfall
In Byron, in December, it is raining for 5.5 days, with typically 1.61" (41mm) of accumulated precipitation. In Byron, Minnesota, during the entire year, the rain falls for 144.2 days and collects up to 28.98" (736mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Byron, during December, snow falls for 15.8 days and regularly aggregates up to 5.31" (135mm) of snow. In Byron, during the entire year, snow falls for 74.1 days and aggregates up to 29.69" (754mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:26 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:42 pm CST.
Sunshine
In Byron, the average sunshine in December is 3.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Byron, MN
- Average high temperature in December: 25.9°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in December: 15.6°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (7.5°F).
Average pressure in December
Byron, MN
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Byron, MN
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.4mph).
Average humidity in December
Byron, MN
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Byron, MN
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is June (5").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in December
Byron, MN
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is June (19.5 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Byron, MN
- Average snowfall in December: 5.31"
The month with the highest snowfall is February (8.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Byron, MN
- Average snowfall days in December: 15.8 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Byron, MN
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 4min
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 6min).
Average sunshine days in December
Byron, MN
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in December
Byron, 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
Byron, MN
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Byron, 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).
Byron, Minnesota, USA
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