December weather forecastAvon, SD
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Avon, South Dakota, with an average temperature ranging between max 30.4°F (-0.9°C) and min 18.3°F (-7.6°C).Temperature
In Avon, stepping into December signifies a significant temperature decrement, moving down from November's frosty 46.4°F (8°C) to a freezing cold 30.4°F (-0.9°C). In Avon, December's nights observe an average temperature dip to 18.3°F (-7.6°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Avon, in December, during 3.1 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 104.1 rainfall days, and 14.29" (363mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Avon, in December, during 6.5 snowfall days, 1.22" (31mm) of snow is typically accumulated. Throughout the year, there are 32.8 snowfall days, and 8.35" (212mm) of snow is accumulated.Daylight
December has the shortest days of the year in Avon, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:44 am and sunset at 4:58 pm. On the last day of December, sunrise is at 8:03 am and sunset at 5:07 pm CST.
Sunshine
In December, the average sunshine is 4.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. 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 maximum daily UV index of 2 during December translates into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Around midday, solar radiation is most harmful; hence, exposure should be limited. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Avon, SD
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in December
Avon, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Avon, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in December
Avon, SD
- Average humidity in December: 81%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).
Average rainfall in December
Avon, SD
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").
Average rainfall days in December
Avon, SD
- Average rainfall days in December: 3.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in December
Avon, SD
- Average snowfall in December: 1.22"
The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Avon, SD
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Avon, SD
- 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: 4h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Avon, SD
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Avon, SD
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Avon, SD
- Average cloud cover in December: 46
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in December
Avon, SD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
