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, Marvin experiences a significant decrease in average high-temperatures, moving down from an icy 40.6°F (4.8°C) in November to a freezing cold 24.6°F (-4.1°C). During the month of December, Marvin anticipates a mean low-temperature of 13.1°F (-10.5°C).Humidity
The average relative humidity in December is 85%.Rainfall
In December, the rain falls for 4.2 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. In Marvin, during the entire year, the rain falls for 115.2 days and collects up to 19.88" (505mm) of precipitation.Snowfall
Months with snowfall in Marvin are January through May, October through December. The month with the most snowfall is December, when snow falls for 12.7 days and typically aggregates up to 4.49" (114mm) of snow.Daylight
December has the shortest days of the year in Marvin, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:47 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 8:06 am and sunset at 4:55 pm CST.
Sunshine
In December, the average sunshine is 4.2h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 in December translates into this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Marvin in December?
What is the average humidity in December in Marvin?
How many days does it rain in December in Marvin?
What is the snowiest month in Marvin?
How much does it snow in Marvin in December?
What is the month with the shortest days in Marvin?
What is the average length of the day in December in Marvin?
When are sunrise and sunset in December in Marvin?
How long on average sun shines in December in Marvin?
What is the UV index reading in December in Marvin?
Average temperature in December
Marvin, SD
- Average high temperature in December: 24.6°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (19.6°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in December
Marvin, SD
- Average pressure in December: 30.12"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
Marvin, SD
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Marvin, 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 (66%).
Average rainfall in December
Marvin, SD
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (3.11").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in December
Marvin, SD
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in December
Marvin, SD
- Average snowfall in December: 4.49"
The month with the highest snowfall is December (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Marvin, SD
- Average snowfall days in December: 12.7 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Marvin, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Marvin, SD
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in December
Marvin, SD
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Marvin, SD
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 25).
Average visibility in December
Marvin, 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).
Marvin, South Dakota, USA
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