December weather forecastByron, MI
December
Weather in December
The first month of the winter, December, is also an icy month in Byron, Michigan, with an average temperature fluctuating between 33.3°F (0.7°C) and 24.6°F (-4.1°C).Temperature
December comes with a drop in the average high-temperature, falling from November's chilly 44.8°F (7.1°C) to a cold 33.3°F (0.7°C). Byron's nocturnal average in December closely mirrors its daytime temperatures, settling at a subzero cold 24.6°F (-4.1°C).Humidity
In December, the average relative humidity in Byron is 84%.Rainfall
In December, the rain falls for 8.2 days. Throughout December, 1.65" (42mm) of precipitation is accumulated. In Byron, during the entire year, the rain falls for 154.1 days and collects up to 26.14" (664mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Byron. In December, it is snowing for 14.6 days. Throughout December, 3.86" (98mm) of snow is accumulated. In Byron, during the entire year, snow falls for 70.8 days and aggregates up to 22.24" (565mm) of snow.Daylight
December has the shortest days of the year in Byron, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:47 am and sunset at 5:02 pm. On the last day of December, sunrise is at 8:06 am and sunset at 5:11 pm EST.
Sunshine
The average sunshine in December in Byron is 3.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Byron. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 1 in December translates into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Byron, MI
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in December: 24.6°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in December
Byron, MI
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Byron, MI
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
Byron, MI
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Byron, MI
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is April (2.99").
The driest months (with the least rainfall) are September and November (1.57").
Average rainfall days in December
Byron, MI
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Byron, MI
- Average snowfall in December: 3.86"
The month with the highest snowfall is February (5.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Byron, MI
- Average snowfall days in December: 14.6 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Byron, MI
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Byron, MI
- Average sunshine days in December: 10 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is January (8.5 days).
Average UV index in December
Byron, MI
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Byron, MI
- Average cloud cover in December: 67
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Byron, MI
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, October and November (6mi).
The months with the lowest visibility are January, February, August, September and December (5mi).
