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
With the transition into December, Chester experiences a significant decrease in average high-temperatures, moving down from a cold 42.3°F (5.7°C) in November to a freezing cold 26.4°F (-3.1°C). During the month of December, an average temperature of 14.9°F (-9.5°C) is noted during the nights in Chester.Humidity
In Chester, the average relative humidity in December is 85%.Rainfall
In December, in Chester, the rain falls for 3.5 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 116.4 rainfall days, and 21.38" (543mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Chester, during December, snow falls for 10.3 days and regularly aggregates up to 4.17" (106mm) of snow. In Chester, during the entire year, snow falls for 45.6 days and aggregates up to 19.49" (495mm) 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 the month, sunrise is at 7:42 am and sunset at 4:51 pm. On the last day of December, sunrise is at 8:01 am and sunset at 5:00 pm CST.
Sunshine
In December, the average sunshine is 4.3h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Chester in December?
What is the average humidity in December in Chester?
How many days does it rain in December in Chester?
How many days does it snow in December in Chester?
What is the month with the shortest days in Chester?
What is the average length of the day in December in Chester?
What time are sunrise and sunset in December in Chester?
How long on average sun shines in December in Chester?
What are the months with the lowest UV index in Chester?
What is the UV index reading in December in Chester?
Average temperature in December
Chester, SD
- Average high temperature in December: 26.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in December: 14.9°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in December
Chester, 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 (29.86"Hg).
Average wind speed in December
Chester, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).
Average humidity in December
Chester, SD
- Average humidity in December: 85%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Chester, SD
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Chester, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Chester, SD
- Average snowfall in December: 4.17"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chester, SD
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chester, SD
- 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Chester, SD
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
Chester, SD
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Chester, SD
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Chester, 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).
Chester, South Dakota, USA
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