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
December's arrival witnesses a distinct temperature drop, receding from November's frosty 43.5°F (6.4°C) to a subzero cold 26.4°F (-3.1°C). In December, the recorded average low-temperature is a still freezing cold 14.2°F (-9.9°C).Humidity
In December, the average relative humidity in Ashton is 84%.Rainfall
In Ashton, during December, the rain falls for 2.7 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Ashton, during the entire year, the rain falls for 97.6 days and collects up to 17.83" (453mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, in Ashton, it is snowing for 9 days. Throughout December, 3.23" (82mm) of snow is accumulated. In Ashton, during the entire year, snow falls for 43.7 days and aggregates up to 18.66" (474mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Ashton, South Dakota.On the first day of December, sunrise is at 7:52 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:02 pm CST.
Sunshine
The average sunshine in December in Ashton is 4.6h.UV index
The average daily maximum UV index in December in Ashton, South Dakota, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Ashton?
What is the average humidity in December in Ashton?
How many days does it rain in December in Ashton?
How much does it snow in Ashton in December?
What is the month with the shortest days in Ashton?
What is the average length of the day in December in Ashton?
When is the sunrise / sunset in December in Ashton?
How many hours of sunshine does Ashton have in December?
How high is the UV index in December in Ashton?
Average temperature in December
Ashton, SD
- Average high temperature in December: 26.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 14.2°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in December
Ashton, SD
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Ashton, SD
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.5mph).
Average humidity in December
Ashton, SD
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (60%).
Average rainfall in December
Ashton, SD
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Ashton, SD
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in December
Ashton, SD
- Average snowfall in December: 3.23"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Ashton, SD
- Average snowfall days in December: 9 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Ashton, SD
- 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: 4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Ashton, SD
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in December
Ashton, 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 and February (UV index 1).
Average cloud cover in December
Ashton, SD
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility in December
Ashton, SD
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Ashton, South Dakota, USA
Weather forecast for your location
2. Allow the app to use your location