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
During South Byron's transition into December, the average high-temperature lessens, moving from a frosty 45.7°F (7.6°C) in November to a wintry 35.4°F (1.9°C). South Byron experiences an average temperature drop to a subzero cold 25.9°F (-3.4°C) during December nights.Humidity
In December, the average relative humidity is 85%.Rainfall
In December, the rain falls for 6.9 days. Throughout December, 1.22" (31mm) of precipitation is accumulated. In South Byron, during the entire year, the rain falls for 127.4 days and collects up to 16.57" (421mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In South Byron, in December, snow falls for 11.5 days, with typically accumulated 2.91" (74mm) of snow. In South Byron, during the entire year, snow falls for 60.1 days and aggregates up to 17.01" (432mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in South Byron.On the first day of the month, sunrise is at 7:24 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:43 am and sunset at 4:47 pm EST.
Sunshine
The average sunshine in December is 2.9h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in South Byron?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does South Byron have in December?
What are the months with the lowest UV index in South Byron?
What is the UV index intensity in December?
Average temperature in December
South Byron, NY
- Average high temperature in December: 35.4°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 (29.3°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
South Byron, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
South Byron, NY
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July, August and September (6.5mph).
Average humidity in December
South Byron, NY
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are May and July (77%).
Average rainfall in December
South Byron, NY
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days in December
South Byron, NY
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in December
South Byron, NY
- Average snowfall in December: 2.91"
The month with the highest snowfall is February (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
South Byron, NY
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Byron, NY
- Average daylight in December: 9h and 1min
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: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 24min).
Average sunshine days in December
South Byron, NY
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is September (16.7 days).
The month with the least sunshine days is February (11 days).
Average UV index in December
South Byron, NY
- 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 and December (UV index 1).
Average cloud cover in December
South Byron, NY
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
South Byron, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).
South Byron, New York, USA
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